Головна сторінка Огляд Довідка
Реєстрація Увійти
root
/
blog_web
1
0
Відгалуження 0
Файли Проблеми 0 Запити на злиття 0 Wiki
Гілка: master
Гілки Теги
blog_web
/
pages
/
034e320f4af88bd4
/
index.html

index.html 83 KB
Постійне посилання Історія Запис

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231 
  1. <!DOCTYPE html>
    2. 

  2. <html lang="zh-CN">
    3. 

  3.   <head>
    4. 

  4.     <meta charset="utf-8">
    5. 

  5.     <meta name="viewport" content="width=device-width,initial-scale=1">
    6. 

  6.     <title>扩展接口 | 彪哥博客</title>
    7. 

  7.     <meta name="generator" content="VuePress 1.9.5">
    8. 

  8.     <link rel="icon" href="/blog/img/favicon.ico">
    9. 

  9.     <meta name="description" content="web前端技术博客,专注web前端学习与总结。JavaScript,js,ES6,TypeScript,vue,React,python,css3,html5,Node,git,github等技术文章。">
    10. 

  10.     <meta name="keywords" content="前端博客,个人技术博客,前端,前端开发,前端框架,web前端,前端面试题,技术文档,学习,面试,JavaScript,js,ES6,TypeScript,vue,python,css3,html5,Node,git,github,markdown">
    11. 

  11.     <meta name="theme-color" content="#11a8cd">
    12. 

  12.     
    13. 

  13.     <link rel="preload" href="/blog/assets/css/0.styles.dc03b589.css" as="style"><link rel="preload" href="/blog/assets/js/app.90754bd5.js" as="script"><link rel="preload" href="/blog/assets/js/2.106f41fb.js" as="script"><link rel="preload" href="/blog/assets/js/3.6748bd5c.js" as="script"><link rel="preload" href="/blog/assets/js/183.544fef00.js" as="script"><link rel="prefetch" href="/blog/assets/js/10.cad3aa70.js"><link rel="prefetch" href="/blog/assets/js/100.08a8b2d8.js"><link rel="prefetch" href="/blog/assets/js/101.2aabb12c.js"><link rel="prefetch" href="/blog/assets/js/102.13f3cc4d.js"><link rel="prefetch" href="/blog/assets/js/103.c19aee03.js"><link rel="prefetch" href="/blog/assets/js/104.91a6aec1.js"><link rel="prefetch" href="/blog/assets/js/105.71de1aa4.js"><link rel="prefetch" href="/blog/assets/js/106.207422de.js"><link rel="prefetch" href="/blog/assets/js/107.bf754f60.js"><link rel="prefetch" href="/blog/assets/js/108.87ddbf21.js"><link rel="prefetch" href="/blog/assets/js/109.de6075c6.js"><link rel="prefetch" href="/blog/assets/js/11.f2e9eca8.js"><link rel="prefetch" href="/blog/assets/js/110.f19c57ae.js"><link rel="prefetch" href="/blog/assets/js/111.da99a105.js"><link rel="prefetch" href="/blog/assets/js/112.9dd75c6f.js"><link rel="prefetch" href="/blog/assets/js/113.9322f157.js"><link rel="prefetch" href="/blog/assets/js/114.c5150cc6.js"><link rel="prefetch" href="/blog/assets/js/115.4fb547bf.js"><link rel="prefetch" href="/blog/assets/js/116.2ddf1aa8.js"><link rel="prefetch" href="/blog/assets/js/117.3c970f48.js"><link rel="prefetch" href="/blog/assets/js/118.921e1d54.js"><link rel="prefetch" href="/blog/assets/js/119.0141defb.js"><link rel="prefetch" href="/blog/assets/js/12.98512c60.js"><link rel="prefetch" href="/blog/assets/js/120.de47a761.js"><link rel="prefetch" href="/blog/assets/js/121.a0b3693a.js"><link rel="prefetch" href="/blog/assets/js/122.6c7dd225.js"><link rel="prefetch" href="/blog/assets/js/123.dbff103c.js"><link rel="prefetch" href="/blog/assets/js/124.493776ef.js"><link rel="prefetch" href="/blog/assets/js/125.554c9fbf.js"><link rel="prefetch" href="/blog/assets/js/126.2421fe84.js"><link rel="prefetch" href="/blog/assets/js/127.805f10a4.js"><link rel="prefetch" href="/blog/assets/js/128.6543adba.js"><link rel="prefetch" href="/blog/assets/js/129.d7c56b92.js"><link rel="prefetch" href="/blog/assets/js/13.a79fa0c7.js"><link rel="prefetch" href="/blog/assets/js/130.593d21f0.js"><link rel="prefetch" href="/blog/assets/js/131.4c90d8b8.js"><link rel="prefetch" href="/blog/assets/js/132.4ad12bdc.js"><link rel="prefetch" href="/blog/assets/js/133.485de1b9.js"><link rel="prefetch" href="/blog/assets/js/134.78bc8f57.js"><link rel="prefetch" href="/blog/assets/js/135.47498729.js"><link rel="prefetch" href="/blog/assets/js/136.d99350df.js"><link rel="prefetch" href="/blog/assets/js/137.57ba6d3f.js"><link rel="prefetch" href="/blog/assets/js/138.d976c801.js"><link rel="prefetch" href="/blog/assets/js/139.766f20b7.js"><link rel="prefetch" href="/blog/assets/js/14.0fdf0c78.js"><link rel="prefetch" href="/blog/assets/js/140.0d9b8fbc.js"><link rel="prefetch" href="/blog/assets/js/141.128b6e26.js"><link rel="prefetch" href="/blog/assets/js/142.e004a584.js"><link rel="prefetch" href="/blog/assets/js/143.5a19a0b2.js"><link rel="prefetch" href="/blog/assets/js/144.5f397211.js"><link rel="prefetch" href="/blog/assets/js/145.cde5f3a0.js"><link rel="prefetch" href="/blog/assets/js/146.4185092c.js"><link rel="prefetch" href="/blog/assets/js/147.ac0e55d3.js"><link rel="prefetch" href="/blog/assets/js/148.30f02604.js"><link rel="prefetch" href="/blog/assets/js/149.760a79ed.js"><link rel="prefetch" href="/blog/assets/js/15.fce722b2.js"><link rel="prefetch" href="/blog/assets/js/150.3a1675b7.js"><link rel="prefetch" href="/blog/assets/js/151.0d73a46e.js"><link rel="prefetch" href="/blog/assets/js/152.c9c054d4.js"><link rel="prefetch" href="/blog/assets/js/153.b007c8a2.js"><link rel="prefetch" href="/blog/assets/js/154.a3acc6bf.js"><link rel="prefetch" href="/blog/assets/js/155.b5c0abcd.js"><link rel="prefetch" href="/blog/assets/js/156.2ba750fc.js"><link rel="prefetch" href="/blog/assets/js/157.fe92af0c.js"><link rel="prefetch" href="/blog/assets/js/158.e16fda40.js"><link rel="prefetch" href="/blog/assets/js/159.7fc7fd44.js"><link rel="prefetch" href="/blog/assets/js/16.871928af.js"><link rel="prefetch" href="/blog/assets/js/160.b581a0f4.js"><link rel="prefetch" href="/blog/assets/js/161.97acae68.js"><link rel="prefetch" href="/blog/assets/js/162.cec1b9a3.js"><link rel="prefetch" href="/blog/assets/js/163.a00f98f7.js"><link rel="prefetch" href="/blog/assets/js/164.cbf4cf52.js"><link rel="prefetch" href="/blog/assets/js/165.bc7a523a.js"><link rel="prefetch" href="/blog/assets/js/166.ca626fb4.js"><link rel="prefetch" href="/blog/assets/js/167.0ca68106.js"><link rel="prefetch" href="/blog/assets/js/168.2e605db8.js"><link rel="prefetch" href="/blog/assets/js/169.401b96d4.js"><link rel="prefetch" href="/blog/assets/js/17.2399cb2b.js"><link rel="prefetch" href="/blog/assets/js/170.7c8b0366.js"><link rel="prefetch" href="/blog/assets/js/171.c3155533.js"><link rel="prefetch" href="/blog/assets/js/172.b659d767.js"><link rel="prefetch" href="/blog/assets/js/173.62c681db.js"><link rel="prefetch" href="/blog/assets/js/174.5c66f092.js"><link rel="prefetch" href="/blog/assets/js/175.d41dd28b.js"><link rel="prefetch" href="/blog/assets/js/176.e60d7f0a.js"><link rel="prefetch" href="/blog/assets/js/177.10de95b1.js"><link rel="prefetch" href="/blog/assets/js/178.f301674d.js"><link rel="prefetch" href="/blog/assets/js/179.77bb52e9.js"><link rel="prefetch" href="/blog/assets/js/18.c338fe95.js"><link rel="prefetch" href="/blog/assets/js/180.d2a4e612.js"><link rel="prefetch" href="/blog/assets/js/181.a53e32e0.js"><link rel="prefetch" href="/blog/assets/js/182.38687994.js"><link rel="prefetch" href="/blog/assets/js/184.711e54a6.js"><link rel="prefetch" href="/blog/assets/js/185.20075148.js"><link rel="prefetch" href="/blog/assets/js/186.08c67f20.js"><link rel="prefetch" href="/blog/assets/js/187.7ca2d0c6.js"><link rel="prefetch" href="/blog/assets/js/188.cd167879.js"><link rel="prefetch" href="/blog/assets/js/189.e8e2eb21.js"><link rel="prefetch" href="/blog/assets/js/19.6b963460.js"><link rel="prefetch" href="/blog/assets/js/190.8b557318.js"><link rel="prefetch" href="/blog/assets/js/191.10d0f80b.js"><link rel="prefetch" href="/blog/assets/js/192.127fef4c.js"><link rel="prefetch" href="/blog/assets/js/193.781690eb.js"><link rel="prefetch" href="/blog/assets/js/194.4b375e2e.js"><link rel="prefetch" href="/blog/assets/js/195.003e3d67.js"><link rel="prefetch" href="/blog/assets/js/196.7a3f55e5.js"><link rel="prefetch" href="/blog/assets/js/197.30d4c5b4.js"><link rel="prefetch" href="/blog/assets/js/198.628c2c1a.js"><link rel="prefetch" href="/blog/assets/js/199.d7c8cbb8.js"><link rel="prefetch" href="/blog/assets/js/20.839dae41.js"><link rel="prefetch" href="/blog/assets/js/200.1fed86d2.js"><link rel="prefetch" href="/blog/assets/js/201.5ba078d9.js"><link rel="prefetch" href="/blog/assets/js/202.b49b23f4.js"><link rel="prefetch" href="/blog/assets/js/203.d88a03d9.js"><link rel="prefetch" href="/blog/assets/js/204.fb928277.js"><link rel="prefetch" href="/blog/assets/js/205.432c3d8d.js"><link rel="prefetch" href="/blog/assets/js/206.ed726599.js"><link rel="prefetch" href="/blog/assets/js/207.c3794556.js"><link rel="prefetch" href="/blog/assets/js/208.416f7a9e.js"><link rel="prefetch" href="/blog/assets/js/209.d396aad5.js"><link rel="prefetch" href="/blog/assets/js/21.bd21bd29.js"><link rel="prefetch" href="/blog/assets/js/210.02e4ee2f.js"><link rel="prefetch" href="/blog/assets/js/211.0f8a9304.js"><link rel="prefetch" href="/blog/assets/js/212.9220dd3d.js"><link rel="prefetch" href="/blog/assets/js/213.89521ebd.js"><link rel="prefetch" href="/blog/assets/js/214.cd5ec468.js"><link rel="prefetch" href="/blog/assets/js/215.0084d772.js"><link rel="prefetch" href="/blog/assets/js/216.ebd468b9.js"><link rel="prefetch" href="/blog/assets/js/217.fac21407.js"><link rel="prefetch" href="/blog/assets/js/218.9793e19a.js"><link rel="prefetch" href="/blog/assets/js/219.b99343b6.js"><link rel="prefetch" href="/blog/assets/js/22.e6bcf65d.js"><link rel="prefetch" href="/blog/assets/js/220.8065033b.js"><link rel="prefetch" href="/blog/assets/js/221.97268a80.js"><link rel="prefetch" href="/blog/assets/js/222.22bf261f.js"><link rel="prefetch" href="/blog/assets/js/223.d5ff1bff.js"><link rel="prefetch" href="/blog/assets/js/224.364b4b11.js"><link rel="prefetch" href="/blog/assets/js/225.bd8b00c7.js"><link rel="prefetch" href="/blog/assets/js/226.78192713.js"><link rel="prefetch" href="/blog/assets/js/227.06ec006e.js"><link rel="prefetch" href="/blog/assets/js/228.166546a8.js"><link rel="prefetch" href="/blog/assets/js/229.fd44d2be.js"><link rel="prefetch" href="/blog/assets/js/23.ebbc3fd3.js"><link rel="prefetch" href="/blog/assets/js/230.109a1752.js"><link rel="prefetch" href="/blog/assets/js/231.c6faedb6.js"><link rel="prefetch" href="/blog/assets/js/232.f938a3a8.js"><link rel="prefetch" href="/blog/assets/js/233.0dc59324.js"><link rel="prefetch" href="/blog/assets/js/234.bb73adca.js"><link rel="prefetch" href="/blog/assets/js/235.97ed69db.js"><link rel="prefetch" href="/blog/assets/js/236.a8c51930.js"><link rel="prefetch" href="/blog/assets/js/237.6ae31c88.js"><link rel="prefetch" href="/blog/assets/js/238.2f5c56ae.js"><link rel="prefetch" href="/blog/assets/js/239.506a4e9f.js"><link rel="prefetch" href="/blog/assets/js/24.19bd04ec.js"><link rel="prefetch" href="/blog/assets/js/25.b4de33d1.js"><link rel="prefetch" href="/blog/assets/js/26.0bb98ba9.js"><link rel="prefetch" href="/blog/assets/js/27.df98327e.js"><link rel="prefetch" href="/blog/assets/js/28.31289bac.js"><link rel="prefetch" href="/blog/assets/js/29.45af5621.js"><link rel="prefetch" href="/blog/assets/js/30.d5c08e66.js"><link rel="prefetch" href="/blog/assets/js/31.78e43a68.js"><link rel="prefetch" href="/blog/assets/js/32.53ca76ee.js"><link rel="prefetch" href="/blog/assets/js/33.081e8ef6.js"><link rel="prefetch" href="/blog/assets/js/34.cb1866c1.js"><link rel="prefetch" href="/blog/assets/js/35.314ba98e.js"><link rel="prefetch" href="/blog/assets/js/36.1f6a5fae.js"><link rel="prefetch" href="/blog/assets/js/37.45e6d22f.js"><link rel="prefetch" href="/blog/assets/js/38.70b82353.js"><link rel="prefetch" href="/blog/assets/js/39.df6c26ac.js"><link rel="prefetch" href="/blog/assets/js/4.44654b1a.js"><link rel="prefetch" href="/blog/assets/js/40.80101c19.js"><link rel="prefetch" href="/blog/assets/js/41.2b5e8c27.js"><link rel="prefetch" href="/blog/assets/js/42.c6ded3fe.js"><link rel="prefetch" href="/blog/assets/js/43.6d9424d6.js"><link rel="prefetch" href="/blog/assets/js/44.835e4b5c.js"><link rel="prefetch" href="/blog/assets/js/45.d74d29a2.js"><link rel="prefetch" href="/blog/assets/js/46.d15a7dc0.js"><link rel="prefetch" href="/blog/assets/js/47.8d66ca97.js"><link rel="prefetch" href="/blog/assets/js/48.3c1102e1.js"><link rel="prefetch" href="/blog/assets/js/49.e17a3436.js"><link rel="prefetch" href="/blog/assets/js/5.88de390f.js"><link rel="prefetch" href="/blog/assets/js/50.6750f186.js"><link rel="prefetch" href="/blog/assets/js/51.9f93af9f.js"><link rel="prefetch" href="/blog/assets/js/52.f3ef3b5e.js"><link rel="prefetch" href="/blog/assets/js/53.a6bacd25.js"><link rel="prefetch" href="/blog/assets/js/54.dbb7c9ab.js"><link rel="prefetch" href="/blog/assets/js/55.2562d0c8.js"><link rel="prefetch" href="/blog/assets/js/56.14ea4931.js"><link rel="prefetch" href="/blog/assets/js/57.a2fad780.js"><link rel="prefetch" href="/blog/assets/js/58.8165b971.js"><link rel="prefetch" href="/blog/assets/js/59.556cab0d.js"><link rel="prefetch" href="/blog/assets/js/6.277038ca.js"><link rel="prefetch" href="/blog/assets/js/60.f048aa7c.js"><link rel="prefetch" href="/blog/assets/js/61.bdb307a8.js"><link rel="prefetch" href="/blog/assets/js/62.37a94f10.js"><link rel="prefetch" href="/blog/assets/js/63.74811780.js"><link rel="prefetch" href="/blog/assets/js/64.81f21b8a.js"><link rel="prefetch" href="/blog/assets/js/65.d970ff03.js"><link rel="prefetch" href="/blog/assets/js/66.cb805d9b.js"><link rel="prefetch" href="/blog/assets/js/67.39f85baa.js"><link rel="prefetch" href="/blog/assets/js/68.7f79766a.js"><link rel="prefetch" href="/blog/assets/js/69.fa8624bd.js"><link rel="prefetch" href="/blog/assets/js/7.e0a6d1b0.js"><link rel="prefetch" href="/blog/assets/js/70.1f3e978d.js"><link rel="prefetch" href="/blog/assets/js/71.13cd9358.js"><link rel="prefetch" href="/blog/assets/js/72.739b22a8.js"><link rel="prefetch" href="/blog/assets/js/73.95f69ae2.js"><link rel="prefetch" href="/blog/assets/js/74.b6624f6a.js"><link rel="prefetch" href="/blog/assets/js/75.b0d9aa06.js"><link rel="prefetch" href="/blog/assets/js/76.681b78df.js"><link rel="prefetch" href="/blog/assets/js/77.46f6e413.js"><link rel="prefetch" href="/blog/assets/js/78.aebd00ee.js"><link rel="prefetch" href="/blog/assets/js/79.1b784d15.js"><link rel="prefetch" href="/blog/assets/js/8.9428e7ee.js"><link rel="prefetch" href="/blog/assets/js/80.1f550d53.js"><link rel="prefetch" href="/blog/assets/js/81.101cc131.js"><link rel="prefetch" href="/blog/assets/js/82.077c8298.js"><link rel="prefetch" href="/blog/assets/js/83.2e375d11.js"><link rel="prefetch" href="/blog/assets/js/84.38102a34.js"><link rel="prefetch" href="/blog/assets/js/85.24532d6a.js"><link rel="prefetch" href="/blog/assets/js/86.1dabbf00.js"><link rel="prefetch" href="/blog/assets/js/87.763da0f2.js"><link rel="prefetch" href="/blog/assets/js/88.ff6e5f7c.js"><link rel="prefetch" href="/blog/assets/js/89.187e5e16.js"><link rel="prefetch" href="/blog/assets/js/9.da143545.js"><link rel="prefetch" href="/blog/assets/js/90.3c8cff94.js"><link rel="prefetch" href="/blog/assets/js/91.a50bd44d.js"><link rel="prefetch" href="/blog/assets/js/92.5484868f.js"><link rel="prefetch" href="/blog/assets/js/93.c8ee75e3.js"><link rel="prefetch" href="/blog/assets/js/94.b18a3e9b.js"><link rel="prefetch" href="/blog/assets/js/95.cddef6ae.js"><link rel="prefetch" href="/blog/assets/js/96.80e5a938.js"><link rel="prefetch" href="/blog/assets/js/97.1f5e5197.js"><link rel="prefetch" href="/blog/assets/js/98.e3a275c8.js"><link rel="prefetch" href="/blog/assets/js/99.d33bf89e.js">
    14. 

  14.     <link rel="stylesheet" href="/blog/assets/css/0.styles.dc03b589.css">
    15. 

  15.   </head>
    16. 

  16.   <body class="theme-mode-light">
    17. 

  17.     <div id="app" data-server-rendered="true"><div class="theme-container sidebar-open have-rightmenu"><header class="navbar blur"><div title="目录" class="sidebar-button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" role="img" viewBox="0 0 448 512" class="icon"><path fill="currentColor" d="M436 124H12c-6.627 0-12-5.373-12-12V80c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12z"></path></svg></div> <a href="/blog/" class="home-link router-link-active"><img src="/blog/img/logo.png" alt="彪哥博客" class="logo"> <span class="site-name can-hide">彪哥博客</span></a> <div class="links"><div class="search-box"><input aria-label="Search" autocomplete="off" spellcheck="false" value=""> <!----></div> <nav class="nav-links can-hide"><div class="nav-item"><a href="/blog/" class="nav-link">首页</a></div><div class="nav-item"><a href="http://fseller.com" target="_blank" rel="noopener noreferrer" class="nav-link external">
    18. 

  18.   个人游戏网站
    19. 

  19.   <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="前端" class="dropdown-title"><a href="/blog/web/" class="link-title">前端</a> <span class="title" style="display:none;">前端</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><h4>前端文章</h4> <ul class="dropdown-subitem-wrapper"><li class="dropdown-subitem"><a href="/blog/pages/8143cc480faf9a11/" class="nav-link">JavaScript</a></li></ul></li><li class="dropdown-item"><h4>学习笔记</h4> <ul class="dropdown-subitem-wrapper"><li class="dropdown-subitem"><a href="/blog/note/javascript/" class="nav-link">《JavaScript教程》</a></li><li class="dropdown-subitem"><a href="/blog/note/js/" class="nav-link">《JavaScript高级程序设计》</a></li><li class="dropdown-subitem"><a href="/blog/note/es6/" class="nav-link">《ES6 教程》</a></li><li class="dropdown-subitem"><a href="/blog/note/vue/" class="nav-link">《Vue》</a></li><li class="dropdown-subitem"><a href="/blog/note/react/" class="nav-link">《React》</a></li><li class="dropdown-subitem"><a href="/blog/note/typescript-axios/" class="nav-link">《TypeScript 从零实现 axios》</a></li><li class="dropdown-subitem"><a href="/blog/note/git/" class="nav-link">《Git》</a></li><li class="dropdown-subitem"><a href="/blog/pages/51afd6/" class="nav-link">TypeScript</a></li><li class="dropdown-subitem"><a href="/blog/pages/4643cd/" class="nav-link">JS设计模式总结</a></li></ul></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="页面" class="dropdown-title"><a href="/blog/ui/" class="link-title">页面</a> <span class="title" style="display:none;">页面</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/blog/pages/8309a5b876fc95e3/" class="nav-link">HTML</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/0a83b083bdf257cb/" class="nav-link">CSS</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="技术" class="dropdown-title"><a href="/blog/technology/" class="link-title">技术</a> <span class="title" style="display:none;">技术</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/blog/pages/9a7ee40fc232253e/" class="nav-link">技术文档</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/4c778760be26d8b3/" class="nav-link">GitHub技巧</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/117708e0af7f0bd9/" class="nav-link">Nodejs</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/41f87d890d0a02af/" class="nav-link">博客搭建</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="更多" class="dropdown-title"><a href="/blog/more/" class="link-title">更多</a> <span class="title" style="display:none;">更多</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/blog/pages/f2a556/" class="nav-link">学习</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/aea6571b7a8bae86/" class="nav-link">面试</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/2d615df9a36a98ed/" class="nav-link">心情杂货</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/baaa02/" class="nav-link">实用技巧</a></li><li class="dropdown-item"><!----> <a href="/blog/friends/" class="nav-link">友情链接</a></li></ul></div></div><div class="nav-item"><a href="/blog/about/" class="nav-link">关于</a></div><div class="nav-item"><a href="/blog/pages/beb6c0bd8a66cea6/" class="nav-link">收藏</a></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="索引" class="dropdown-title"><a href="/blog/archives/" class="link-title">索引</a> <span class="title" style="display:none;">索引</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/blog/categories/" class="nav-link">分类</a></li><li class="dropdown-item"><!----> <a href="/blog/tags/" class="nav-link">标签</a></li><li class="dropdown-item"><!----> <a href="/blog/archives/" class="nav-link">归档</a></li></ul></div></div> <a href="https://github.com/heBody/blog" target="_blank" rel="noopener noreferrer" class="repo-link">
    20. 

  20.     GitHub
    21. 

  21.     <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav></div></header> <div class="sidebar-mask"></div> <div class="sidebar-hover-trigger"></div> <aside class="sidebar" style="display:none;"><div class="blogger"><img src="/blog/img/head.jpg"> <div class="blogger-info"><h3>彪哥</h3> <span>爱好前端</span></div></div> <nav class="nav-links"><div class="nav-item"><a href="/blog/" class="nav-link">首页</a></div><div class="nav-item"><a href="http://fseller.com" target="_blank" rel="noopener noreferrer" class="nav-link external">
    22. 

  22.   个人游戏网站
    23. 

  23.   <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="前端" class="dropdown-title"><a href="/blog/web/" class="link-title">前端</a> <span class="title" style="display:none;">前端</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><h4>前端文章</h4> <ul class="dropdown-subitem-wrapper"><li class="dropdown-subitem"><a href="/blog/pages/8143cc480faf9a11/" class="nav-link">JavaScript</a></li></ul></li><li class="dropdown-item"><h4>学习笔记</h4> <ul class="dropdown-subitem-wrapper"><li class="dropdown-subitem"><a href="/blog/note/javascript/" class="nav-link">《JavaScript教程》</a></li><li class="dropdown-subitem"><a href="/blog/note/js/" class="nav-link">《JavaScript高级程序设计》</a></li><li class="dropdown-subitem"><a href="/blog/note/es6/" class="nav-link">《ES6 教程》</a></li><li class="dropdown-subitem"><a href="/blog/note/vue/" class="nav-link">《Vue》</a></li><li class="dropdown-subitem"><a href="/blog/note/react/" class="nav-link">《React》</a></li><li class="dropdown-subitem"><a href="/blog/note/typescript-axios/" class="nav-link">《TypeScript 从零实现 axios》</a></li><li class="dropdown-subitem"><a href="/blog/note/git/" class="nav-link">《Git》</a></li><li class="dropdown-subitem"><a href="/blog/pages/51afd6/" class="nav-link">TypeScript</a></li><li class="dropdown-subitem"><a href="/blog/pages/4643cd/" class="nav-link">JS设计模式总结</a></li></ul></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="页面" class="dropdown-title"><a href="/blog/ui/" class="link-title">页面</a> <span class="title" style="display:none;">页面</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/blog/pages/8309a5b876fc95e3/" class="nav-link">HTML</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/0a83b083bdf257cb/" class="nav-link">CSS</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="技术" class="dropdown-title"><a href="/blog/technology/" class="link-title">技术</a> <span class="title" style="display:none;">技术</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/blog/pages/9a7ee40fc232253e/" class="nav-link">技术文档</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/4c778760be26d8b3/" class="nav-link">GitHub技巧</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/117708e0af7f0bd9/" class="nav-link">Nodejs</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/41f87d890d0a02af/" class="nav-link">博客搭建</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="更多" class="dropdown-title"><a href="/blog/more/" class="link-title">更多</a> <span class="title" style="display:none;">更多</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/blog/pages/f2a556/" class="nav-link">学习</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/aea6571b7a8bae86/" class="nav-link">面试</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/2d615df9a36a98ed/" class="nav-link">心情杂货</a></li><li class="dropdown-item"><!----> <a href="/blog/pages/baaa02/" class="nav-link">实用技巧</a></li><li class="dropdown-item"><!----> <a href="/blog/friends/" class="nav-link">友情链接</a></li></ul></div></div><div class="nav-item"><a href="/blog/about/" class="nav-link">关于</a></div><div class="nav-item"><a href="/blog/pages/beb6c0bd8a66cea6/" class="nav-link">收藏</a></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="索引" class="dropdown-title"><a href="/blog/archives/" class="link-title">索引</a> <span class="title" style="display:none;">索引</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/blog/categories/" class="nav-link">分类</a></li><li class="dropdown-item"><!----> <a href="/blog/tags/" class="nav-link">标签</a></li><li class="dropdown-item"><!----> <a href="/blog/archives/" class="nav-link">归档</a></li></ul></div></div> <a href="https://github.com/heBody/blog" target="_blank" rel="noopener noreferrer" class="repo-link">
    24. 

  24.     GitHub
    25. 

  25.     <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav>  <ul class="sidebar-links"><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>初识 TypeScript</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>TypeScript 常用语法</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 项目初始化</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 基础功能实现</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 异常情况处理</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>ts-axios 接口扩展</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/blog/pages/034e320f4af88bd4/" aria-current="page" class="active sidebar-link">扩展接口</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header level2"><a href="/blog/pages/034e320f4af88bd4/#需求分析" class="sidebar-link">需求分析</a></li><li class="sidebar-sub-header level2"><a href="/blog/pages/034e320f4af88bd4/#接口类型定义" class="sidebar-link">接口类型定义</a></li><li class="sidebar-sub-header level2"><a href="/blog/pages/034e320f4af88bd4/#创建-axios-类" class="sidebar-link">创建 Axios 类</a></li><li class="sidebar-sub-header level2"><a href="/blog/pages/034e320f4af88bd4/#混合对象实现" class="sidebar-link">混合对象实现</a></li><li class="sidebar-sub-header level2"><a href="/blog/pages/034e320f4af88bd4/#demo-编写" class="sidebar-link">demo 编写</a></li></ul></li><li><a href="/blog/pages/8af227eae851ec97/" class="sidebar-link">axios 函数重载</a></li><li><a href="/blog/pages/c4489d0bab02cc0c/" class="sidebar-link">响应数据支持泛型</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 拦截器实现</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 配置化实现</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 取消功能实现</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 更多功能实现</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 单元测试</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 部署与发布</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <div><main class="page"><div class="theme-vdoing-wrapper "><div class="articleInfo-wrap" data-v-06970110><div class="articleInfo" data-v-06970110><ul class="breadcrumbs" data-v-06970110><li data-v-06970110><a href="/blog/" title="首页" class="iconfont icon-home router-link-active" data-v-06970110></a></li> <li data-v-06970110><a href="/blog/note/typescript-axios/#《TypeScript 从零实现 axios》" data-v-06970110>《TypeScript 从零实现 axios》</a></li><li data-v-06970110><a href="/blog/note/typescript-axios/#ts-axios 接口扩展" data-v-06970110>ts-axios 接口扩展</a></li></ul> <div class="info" data-v-06970110><div title="作者" class="author iconfont icon-touxiang" data-v-06970110><a href="javascript:;" data-v-06970110>HuangYi</a></div> <div title="创建时间" class="date iconfont icon-riqi" data-v-06970110><a href="javascript:;" data-v-06970110>2020-01-05</a></div> <!----></div></div></div> <!----> <div class="content-wrapper"><div class="right-menu-wrapper"><div class="right-menu-margin"><div class="right-menu-title">目录</div> <div class="right-menu-content"></div></div></div> <h1><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAeCAYAAAA7MK6iAAAAAXNSR0IArs4c6QAABKFJREFUSA3tVl1oFVcQnrMbrak3QUgkya1akpJYcrUtIqW1JvFBE9LiQ5v6JmJpolbMg32rVrhgoYK0QiMY6i9Y6EMaW5D+xFJaTYItIuK2Kr3+BJNwkxBj05sQY3b3nM6cs2dv9t7NT/vQJw/sndk5M/PNzJkzewGerP+pAmy+ON8lLzUJgA8ZYxYIYZmGYRnctDaWvJJAmTtfP1pvXsBCCPP8QFcCaRkZYACgDZFO4stNIcBCajEOlmmC9XpJ9bAGCaPaPmzPl32dvLSVu3BWCTQs0XQQ6g0DYgwLIoAZbBCdW/i+781o1VVlm/410mw4h06Y7bIPHNyWDyL4FHkX03Q8SrzNhZTZriieckWt7cL6MM85YcLpsi/7O9/iXFT6MswI0DmmpkSaJ0qLxFIm3+i1THHB3zmBH3PYx9CcykcLOeQVVa7QtdxTgQgEleX2AjHYfwA+2ddV77ruGoJUbhGDI09YSNXyMpUt5ylOzxgbUmtOp7NmbNt8v3arjTBfYELmLUV+M+nSawNNAUqpT3ClJWg5I3BLT+cGW/DXNGCa6tx1aakCGEigArTn4TDIPdrXXYKCZNrHLMCOEPvHBlLQ99s9eHB7EB6NTki73CVPQ2F5MSx/uRQixfmq7rK0wYD8w8E905bnPDfwoWs/rfv93NWN/ZfvwsLIU7A09gxECyISeGJkHAau98L97tuw7NXnoPyNF8FcYGLGKsOs0mN3OEyec9esGW/ZEl945dTP34wlR2FZVQWU1q0Cw8Tr7p+hgLLNL0FPxx/Q35mA8aEUrH6nCgwEl0tn7wUiZYJnNRh6DK4UH/k0lfyrsBKdPVv/AriGIQcEDQZ65LBAGe2Rzui9Ybjz7XUppz1/uKBbyVPGkN3ZAeC6hr0x7Nr38N5+EqkoOm17xpoqR9ohQF55ERSvr4Dkr3chNfC3DMzGJlNBElW8w9nsGQvhNGIzDkXzCg8cLK951xHsFBlTJspJNi3ZFIMF2AeDV3q8DNOB+YHi6QTrChDIWDBRi5U5f+ZMfJLu3ccrqxtdxk4SKH336LFxSmkqefwU5T8fhdSdQf9IVKD6aNiwI/hnmcAZ91isYMJIaCUCx9W098+LgruikeTqzqqxKPUwqJyCPJiyemVVZBOijDGjD38Os0jOiSPL1z3SPjXNANbiNPXAdzTfukjjuknNBbyz3nwgTd3AVFqUJ5hpHlq9MveLnWwttUfoygBmvVjuikxND3znrhsELnZk7k+OjIGxeNEkomyLVta0xxn+HZhjBc4YZ/AFjHjz9u3xRZl2BN4aq9nFwWh16IrQ1aHHEd3j1+4/dB9OtH4e29A2H1DyHQRmOSfQZ1Fy7MHBTGB6J/Djq6p3OxyO2cB+4Car7v/o3GXgfAkj23+x9ID1Teoamo/SXcbvSf2PX7Vc8DdCmE1vN9di+32P9/5YR3vLnhCVGUWBjEkr3yh4H8v9CzmsbdhzOKzsJKM90iFdaTMjRPhGVsakRvOaRidljo6H6G7j+ctrJpsP+4COhDIl0La2+FS4+5mlocBaXY5QnGZysIBYoeSsl5qQzrSj/cgNrfuEzlWBfwA+EjrZyWUvpAAAAABJRU5ErkJggg==">扩展接口<!----></h1>  <div class="theme-vdoing-content content__default"><h1 id="扩展接口"><a href="#扩展接口" class="header-anchor">#</a> 扩展接口</h1> <h2 id="需求分析"><a href="#需求分析" class="header-anchor">#</a> 需求分析</h2> <p>为了用户更加方便地使用 axios 发送请求，我们可以为所有支持请求方法扩展一些接口：</p> <ul><li><p><code>axios.request(config)</code></p></li> <li><p><code>axios.get(url[, config])</code></p></li> <li><p><code>axios.delete(url[, config])</code></p></li> <li><p><code>axios.head(url[, config])</code></p></li> <li><p><code>axios.options(url[, config])</code></p></li> <li><p><code>axios.post(url[, data[, config]])</code></p></li> <li><p><code>axios.put(url[, data[, config]])</code></p></li> <li><p><code>axios.patch(url[, data[, config]])</code></p></li></ul> <p>如果使用了这些方法，我们就不必在 <code>config</code> 中指定 <code>url</code>、<code>method</code>、<code>data</code> 这些属性了。</p> <p>从需求上来看，<code>axios</code> 不再单单是一个方法，更像是一个混合对象，本身是一个方法，又有很多方法属性，接下来我们就来实现这个混合对象。</p> <h2 id="接口类型定义"><a href="#接口类型定义" class="header-anchor">#</a> 接口类型定义</h2> <p>根据需求分析，混合对象 <code>axios</code> 本身是一个函数，我们再实现一个包括它属性方法的类，然后把这个类的原型属性和自身属性再拷贝到 <code>axios</code> 上。</p> <p>我们先来给 <code>axios</code> 混合对象定义接口：</p> <p><code>types/index.ts</code>：</p> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">export</span> <span class="token keyword">interface</span> <span class="token class-name">Axios</span> <span class="token punctuation">{</span>
    26. 

  26.   <span class="token function">request</span><span class="token punctuation">(</span>config<span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise
    27. 

  27. 

  28.   <span class="token function">get</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise
    29. 

  29. 

  30.   <span class="token keyword">delete</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise
    31. 

  31. 

  32.   <span class="token function">head</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise
    33. 

  33. 

  34.   <span class="token function">options</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise
    35. 

  35. 

  36.   <span class="token function">post</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> data<span class="token operator">?</span><span class="token operator">:</span> <span class="token builtin">any</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise
    37. 

  37. 

  38.   <span class="token function">put</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> data<span class="token operator">?</span><span class="token operator">:</span> <span class="token builtin">any</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise
    39. 

  39. 

  40.   <span class="token function">patch</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> data<span class="token operator">?</span><span class="token operator">:</span> <span class="token builtin">any</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise
    41. 

  41. <span class="token punctuation">}</span>
    42. 

  42. 

  43. <span class="token keyword">export</span> <span class="token keyword">interface</span> <span class="token class-name">AxiosInstance</span> <span class="token keyword">extends</span> <span class="token class-name">Axios</span> <span class="token punctuation">{</span>
    44. 

  44.   <span class="token punctuation">(</span>config<span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise
    45. 

  45. <span class="token punctuation">}</span>
    46. 

  46. 

  47. <span class="token keyword">export</span> <span class="token keyword">interface</span> <span class="token class-name">AxiosRequestConfig</span> <span class="token punctuation">{</span>
    48. 

  48.   url<span class="token operator">?</span><span class="token operator">:</span> <span class="token builtin">string</span>
    49. 

  49.   <span class="token comment">// ...</span>
    50. 

  50. <span class="token punctuation">}</span>
    51. 

  51. 

  52. </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br></div></div><p>首先定义一个 <code>Axios</code> 类型接口，它描述了 <code>Axios</code> 类中的公共方法，接着定义了 <code>AxiosInstance</code> 接口继承 <code>Axios</code>，它就是一个混合类型的接口。</p> <p>另外 <code>AxiosRequestConfig</code> 类型接口中的 <code>url</code> 属性变成了可选属性。</p> <h2 id="创建-axios-类"><a href="#创建-axios-类" class="header-anchor">#</a> 创建 Axios 类</h2> <p>我们创建一个 <code>Axios</code> 类，来实现接口定义的公共方法。我们创建了一个 <code>core</code> 目录，用来存放发送请求核心流程的代码。我们在 <code>core</code> 目录下创建 <code>Axios.ts</code> 文件。</p> <p><code>core/Axios.ts</code></p> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">import</span> <span class="token punctuation">{</span> AxiosRequestConfig<span class="token punctuation">,</span> AxiosPromise<span class="token punctuation">,</span> Method <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'../types'</span>
    53. 

  53. <span class="token keyword">import</span> dispatchRequest <span class="token keyword">from</span> <span class="token string">'./dispatchRequest'</span>
    54. 

  54. 

  55. <span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token keyword">class</span> <span class="token class-name">Axios</span> <span class="token punctuation">{</span>
    56. 

  56.   <span class="token function">request</span><span class="token punctuation">(</span>config<span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise <span class="token punctuation">{</span>
    57. 

  57.     <span class="token keyword">return</span> <span class="token function">dispatchRequest</span><span class="token punctuation">(</span>config<span class="token punctuation">)</span>
    58. 

  58.   <span class="token punctuation">}</span>
    59. 

  59. 

  60.   <span class="token function">get</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise <span class="token punctuation">{</span>
    61. 

  61.     <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_requestMethodWithoutData</span><span class="token punctuation">(</span><span class="token string">'get'</span><span class="token punctuation">,</span> url<span class="token punctuation">,</span> config<span class="token punctuation">)</span>
    62. 

  62.   <span class="token punctuation">}</span>
    63. 

  63. 

  64.   <span class="token keyword">delete</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise <span class="token punctuation">{</span>
    65. 

  65.     <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_requestMethodWithoutData</span><span class="token punctuation">(</span><span class="token string">'delete'</span><span class="token punctuation">,</span> url<span class="token punctuation">,</span> config<span class="token punctuation">)</span>
    66. 

  66.   <span class="token punctuation">}</span>
    67. 

  67. 

  68.   <span class="token function">head</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise <span class="token punctuation">{</span>
    69. 

  69.     <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_requestMethodWithoutData</span><span class="token punctuation">(</span><span class="token string">'head'</span><span class="token punctuation">,</span> url<span class="token punctuation">,</span> config<span class="token punctuation">)</span>
    70. 

  70.   <span class="token punctuation">}</span>
    71. 

  71. 

  72.   <span class="token function">options</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise <span class="token punctuation">{</span>
    73. 

  73.     <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_requestMethodWithoutData</span><span class="token punctuation">(</span><span class="token string">'options'</span><span class="token punctuation">,</span> url<span class="token punctuation">,</span> config<span class="token punctuation">)</span>
    74. 

  74.   <span class="token punctuation">}</span>
    75. 

  75. 

  76.   <span class="token function">post</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> data<span class="token operator">?</span><span class="token operator">:</span> <span class="token builtin">any</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise <span class="token punctuation">{</span>
    77. 

  77.     <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_requestMethodWithData</span><span class="token punctuation">(</span><span class="token string">'post'</span><span class="token punctuation">,</span> url<span class="token punctuation">,</span> data<span class="token punctuation">,</span> config<span class="token punctuation">)</span>
    78. 

  78.   <span class="token punctuation">}</span>
    79. 

  79. 

  80.   <span class="token function">put</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> data<span class="token operator">?</span><span class="token operator">:</span> <span class="token builtin">any</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise <span class="token punctuation">{</span>
    81. 

  81.     <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_requestMethodWithData</span><span class="token punctuation">(</span><span class="token string">'put'</span><span class="token punctuation">,</span> url<span class="token punctuation">,</span> data<span class="token punctuation">,</span> config<span class="token punctuation">)</span>
    82. 

  82.   <span class="token punctuation">}</span>
    83. 

  83. 

  84.   <span class="token function">patch</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> data<span class="token operator">?</span><span class="token operator">:</span> <span class="token builtin">any</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise <span class="token punctuation">{</span>
    85. 

  85.     <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_requestMethodWithData</span><span class="token punctuation">(</span><span class="token string">'patch'</span><span class="token punctuation">,</span> url<span class="token punctuation">,</span> data<span class="token punctuation">,</span> config<span class="token punctuation">)</span>
    86. 

  86.   <span class="token punctuation">}</span>
    87. 

  87. 

  88.   <span class="token function">_requestMethodWithoutData</span><span class="token punctuation">(</span>method<span class="token operator">:</span> Method<span class="token punctuation">,</span> url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    89. 

  89.     <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">request</span><span class="token punctuation">(</span>
    90. 

  90.       Object<span class="token punctuation">.</span><span class="token function">assign</span><span class="token punctuation">(</span>config <span class="token operator">||</span> <span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
    91. 

  91.         method<span class="token punctuation">,</span>
    92. 

  92.         url
    93. 

  93.       <span class="token punctuation">}</span><span class="token punctuation">)</span>
    94. 

  94.     <span class="token punctuation">)</span>
    95. 

  95.   <span class="token punctuation">}</span>
    96. 

  96. 

  97.   <span class="token function">_requestMethodWithData</span><span class="token punctuation">(</span>method<span class="token operator">:</span> Method<span class="token punctuation">,</span> url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> data<span class="token operator">?</span><span class="token operator">:</span> <span class="token builtin">any</span><span class="token punctuation">,</span> config<span class="token operator">?</span><span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    98. 

  98.     <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">request</span><span class="token punctuation">(</span>
    99. 

  99.       Object<span class="token punctuation">.</span><span class="token function">assign</span><span class="token punctuation">(</span>config <span class="token operator">||</span> <span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
    100. 

  100.         method<span class="token punctuation">,</span>
    101. 

  101.         url<span class="token punctuation">,</span>
    102. 

  102.         data
    103. 

  103.       <span class="token punctuation">}</span><span class="token punctuation">)</span>
    104. 

  104.     <span class="token punctuation">)</span>
    105. 

  105.   <span class="token punctuation">}</span>
    106. 

  106. <span class="token punctuation">}</span>
    107. 

  107. </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br><span class="line-number">31</span><br><span class="line-number">32</span><br><span class="line-number">33</span><br><span class="line-number">34</span><br><span class="line-number">35</span><br><span class="line-number">36</span><br><span class="line-number">37</span><br><span class="line-number">38</span><br><span class="line-number">39</span><br><span class="line-number">40</span><br><span class="line-number">41</span><br><span class="line-number">42</span><br><span class="line-number">43</span><br><span class="line-number">44</span><br><span class="line-number">45</span><br><span class="line-number">46</span><br><span class="line-number">47</span><br><span class="line-number">48</span><br><span class="line-number">49</span><br><span class="line-number">50</span><br><span class="line-number">51</span><br><span class="line-number">52</span><br><span class="line-number">53</span><br><span class="line-number">54</span><br><span class="line-number">55</span><br></div></div><p>其中 <code>request</code> 方法的功能和我们之前的 <code>axios</code> 函数功能是一致。<code>axios</code> 函数的功能就是发送请求，基于模块化编程的思想，我们把这部分功能抽出一个单独的模块，在 <code>core</code> 目录下创建 <code>dispatchRequest</code> 方法，把之前 <code>axios.ts</code> 的相关代码拷贝过去。另外我们把 <code>xhr.ts</code> 文件也迁移到 <code>core</code> 目录下。</p> <p><code>core/dispatchRequest.ts</code>：</p> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">import</span> <span class="token punctuation">{</span> AxiosPromise<span class="token punctuation">,</span> AxiosRequestConfig<span class="token punctuation">,</span> AxiosResponse <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'../types'</span>
    108. 

  108. <span class="token keyword">import</span> xhr <span class="token keyword">from</span> <span class="token string">'./xhr'</span>
    109. 

  109. <span class="token keyword">import</span> <span class="token punctuation">{</span> buildURL <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'../helpers/url'</span>
    110. 

  110. <span class="token keyword">import</span> <span class="token punctuation">{</span> transformRequest<span class="token punctuation">,</span> transformResponse <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'../helpers/data'</span>
    111. 

  111. <span class="token keyword">import</span> <span class="token punctuation">{</span> processHeaders <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'../helpers/headers'</span>
    112. 

  112. 

  113. <span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token keyword">function</span> <span class="token function">dispatchRequest</span><span class="token punctuation">(</span>config<span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> AxiosPromise <span class="token punctuation">{</span>
    114. 

  114.   <span class="token function">processConfig</span><span class="token punctuation">(</span>config<span class="token punctuation">)</span>
    115. 

  115.   <span class="token keyword">return</span> <span class="token function">xhr</span><span class="token punctuation">(</span>config<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span>res <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    116. 

  116.     <span class="token keyword">return</span> <span class="token function">transformResponseData</span><span class="token punctuation">(</span>res<span class="token punctuation">)</span>
    117. 

  117.   <span class="token punctuation">}</span><span class="token punctuation">)</span>
    118. 

  118. <span class="token punctuation">}</span>
    119. 

  119. 

  120. <span class="token keyword">function</span> <span class="token function">processConfig</span><span class="token punctuation">(</span>config<span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> <span class="token keyword">void</span> <span class="token punctuation">{</span>
    121. 

  121.   config<span class="token punctuation">.</span>url <span class="token operator">=</span> <span class="token function">transformURL</span><span class="token punctuation">(</span>config<span class="token punctuation">)</span>
    122. 

  122.   config<span class="token punctuation">.</span>headers <span class="token operator">=</span> <span class="token function">transformHeaders</span><span class="token punctuation">(</span>config<span class="token punctuation">)</span>
    123. 

  123.   config<span class="token punctuation">.</span>data <span class="token operator">=</span> <span class="token function">transformRequestData</span><span class="token punctuation">(</span>config<span class="token punctuation">)</span>
    124. 

  124. <span class="token punctuation">}</span>
    125. 

  125. 

  126. <span class="token keyword">function</span> <span class="token function">transformURL</span><span class="token punctuation">(</span>config<span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> <span class="token builtin">string</span> <span class="token punctuation">{</span>
    127. 

  127.   <span class="token keyword">const</span> <span class="token punctuation">{</span> url<span class="token punctuation">,</span> params <span class="token punctuation">}</span> <span class="token operator">=</span> config
    128. 

  128.   <span class="token keyword">return</span> <span class="token function">buildURL</span><span class="token punctuation">(</span>url<span class="token punctuation">,</span> params<span class="token punctuation">)</span>
    129. 

  129. <span class="token punctuation">}</span>
    130. 

  130. 

  131. <span class="token keyword">function</span> <span class="token function">transformRequestData</span><span class="token punctuation">(</span>config<span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> <span class="token builtin">any</span> <span class="token punctuation">{</span>
    132. 

  132.   <span class="token keyword">return</span> <span class="token function">transformRequest</span><span class="token punctuation">(</span>config<span class="token punctuation">.</span>data<span class="token punctuation">)</span>
    133. 

  133. <span class="token punctuation">}</span>
    134. 

  134. 

  135. <span class="token keyword">function</span> <span class="token function">transformHeaders</span><span class="token punctuation">(</span>config<span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    136. 

  136.   <span class="token keyword">const</span> <span class="token punctuation">{</span> headers <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">,</span> data <span class="token punctuation">}</span> <span class="token operator">=</span> config
    137. 

  137.   <span class="token keyword">return</span> <span class="token function">processHeaders</span><span class="token punctuation">(</span>headers<span class="token punctuation">,</span> data<span class="token punctuation">)</span>
    138. 

  138. <span class="token punctuation">}</span>
    139. 

  139. 

  140. <span class="token keyword">function</span> <span class="token function">transformResponseData</span><span class="token punctuation">(</span>res<span class="token operator">:</span> AxiosResponse<span class="token punctuation">)</span><span class="token operator">:</span> AxiosResponse <span class="token punctuation">{</span>
    141. 

  141.   res<span class="token punctuation">.</span>data <span class="token operator">=</span> <span class="token function">transformResponse</span><span class="token punctuation">(</span>res<span class="token punctuation">.</span>data<span class="token punctuation">)</span>
    142. 

  142.   <span class="token keyword">return</span> res
    143. 

  143. <span class="token punctuation">}</span>
    144. 

  144. </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br><span class="line-number">31</span><br><span class="line-number">32</span><br><span class="line-number">33</span><br><span class="line-number">34</span><br><span class="line-number">35</span><br><span class="line-number">36</span><br><span class="line-number">37</span><br></div></div><p>回到 <code>Axios.ts</code> 文件，对于 <code>get</code>、<code>delete</code>、<code>head</code>、<code>options</code>、<code>post</code>、<code>patch</code>、<code>put</code> 这些方法，都是对外提供的语法糖，内部都是通过调用 <code>request</code> 方法实现发送请求，只不过在调用之前对 <code>config</code> 做了一层合并处理。</p> <h2 id="混合对象实现"><a href="#混合对象实现" class="header-anchor">#</a> 混合对象实现</h2> <p>混合对象实现思路很简单，首先这个对象是一个函数，其次这个对象要包括 <code>Axios</code> 类的所有原型属性和实例属性，我们首先来实现一个辅助函数 <code>extend</code>。</p> <p><code>helpers/util.ts</code></p> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">export</span> <span class="token keyword">function</span> <span class="token generic-function"><span class="token function">extend</span><span class="token generic class-name"><span class="token operator">&lt;</span><span class="token constant">T</span><span class="token punctuation">,</span> <span class="token constant">U</span><span class="token operator">&gt;</span></span></span><span class="token punctuation">(</span>to<span class="token operator">:</span> <span class="token constant">T</span><span class="token punctuation">,</span> from<span class="token operator">:</span> <span class="token constant">U</span><span class="token punctuation">)</span><span class="token operator">:</span> <span class="token constant">T</span> <span class="token operator">&amp;</span> <span class="token constant">U</span> <span class="token punctuation">{</span>
    145. 

  145.   <span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">const</span> key <span class="token keyword">in</span> from<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    146. 

  146.     <span class="token punctuation">;</span><span class="token punctuation">(</span>to <span class="token keyword">as</span> <span class="token constant">T</span> <span class="token operator">&amp;</span> <span class="token constant">U</span><span class="token punctuation">)</span><span class="token punctuation">[</span>key<span class="token punctuation">]</span> <span class="token operator">=</span> from<span class="token punctuation">[</span>key<span class="token punctuation">]</span> <span class="token keyword">as</span> <span class="token builtin">any</span>
    147. 

  147.   <span class="token punctuation">}</span>
    148. 

  148.   <span class="token keyword">return</span> to <span class="token keyword">as</span> <span class="token constant">T</span> <span class="token operator">&amp;</span> <span class="token constant">U</span>
    149. 

  149. <span class="token punctuation">}</span>
    150. 

  150. </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br></div></div><p><code>extend</code> 方法的实现用到了交叉类型，并且用到了类型断言。<code>extend</code> 的最终目的是把 <code>from</code> 里的属性都扩展到 <code>to</code> 中，包括原型上的属性。</p> <p>我们接下来对 <code>axios.ts</code> 文件做修改，我们用工厂模式去创建一个 <code>axios</code> 混合对象。</p> <p><code>axios.ts</code>：</p> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">import</span> <span class="token punctuation">{</span> AxiosInstance <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'./types'</span>
    151. 

  151. <span class="token keyword">import</span> Axios <span class="token keyword">from</span> <span class="token string">'./core/Axios'</span>
    152. 

  152. <span class="token keyword">import</span> <span class="token punctuation">{</span> extend <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'./helpers/util'</span>
    153. 

  153. 

  154. <span class="token keyword">function</span> <span class="token function">createInstance</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">:</span> AxiosInstance <span class="token punctuation">{</span>
    155. 

  155.   <span class="token keyword">const</span> context <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Axios</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    156. 

  156.   <span class="token keyword">const</span> instance <span class="token operator">=</span> Axios<span class="token punctuation">.</span>prototype<span class="token punctuation">.</span><span class="token function">request</span><span class="token punctuation">.</span><span class="token function">bind</span><span class="token punctuation">(</span>context<span class="token punctuation">)</span>
    157. 

  157. 

  158.   <span class="token function">extend</span><span class="token punctuation">(</span>instance<span class="token punctuation">,</span> context<span class="token punctuation">)</span>
    159. 

  159. 

  160.   <span class="token keyword">return</span> instance <span class="token keyword">as</span> AxiosInstance
    161. 

  161. <span class="token punctuation">}</span>
    162. 

  162. 

  163. <span class="token keyword">const</span> axios <span class="token operator">=</span> <span class="token function">createInstance</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    164. 

  164. 

  165. <span class="token keyword">export</span> <span class="token keyword">default</span> axios
    166. 

  166. </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br></div></div><p>在 <code>createInstance</code> 工厂函数的内部，我们首先实例化了 <code>Axios</code> 实例 <code>context</code>，接着创建<code>instance</code> 指向 <code>Axios.prototype.request</code> 方法，并绑定了上下文 <code>context</code>；接着通过 <code>extend</code> 方法把 <code>context</code> 中的原型方法和实例方法全部拷贝到 <code>instance</code> 上，这样就实现了一个混合对象：<code>instance</code> 本身是一个函数，又拥有了 <code>Axios</code> 类的所有原型和实例属性，最终把这个 <code>instance</code> 返回。由于这里 <code>TypeScript</code> 不能正确推断 <code>instance</code> 的类型，我们把它断言成 <code>AxiosInstance</code> 类型。</p> <p>这样我们就可以通过 <code>createInstance</code> 工厂函数创建了 <code>axios</code>，当直接调用 <code>axios</code> 方法就相当于执行了 <code>Axios</code> 类的 <code>request</code> 方法发送请求，当然我们也可以调用 <code>axios.get</code>、<code>axios.post</code> 等方法。</p> <h2 id="demo-编写"><a href="#demo-编写" class="header-anchor">#</a> demo 编写</h2> <p>在 <code>examples</code> 目录下创建 <code>extend</code> 目录，在 <code>extend</code> 目录下创建 <code>index.html</code>:</p> <div class="language-html line-numbers-mode"><pre class="language-html"><code><span class="token doctype"><span class="token punctuation">&lt;!</span><span class="token doctype-tag">DOCTYPE</span> <span class="token name">html</span><span class="token punctuation">&gt;</span></span>
    167. 

  167. <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>html</span> <span class="token attr-name">lang</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>en<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    168. 

  168.   <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>head</span><span class="token punctuation">&gt;</span></span>
    169. 

  169.     <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>meta</span> <span class="token attr-name">charset</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>utf-8<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    170. 

  170.     <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>title</span><span class="token punctuation">&gt;</span></span>Extend example<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>title</span><span class="token punctuation">&gt;</span></span>
    171. 

  171.   <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>head</span><span class="token punctuation">&gt;</span></span>
    172. 

  172.   <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>body</span><span class="token punctuation">&gt;</span></span>
    173. 

  173.     <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>/__build__/extend.js<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span><span class="token script"></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">&gt;</span></span>
    174. 

  174.   <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>body</span><span class="token punctuation">&gt;</span></span>
    175. 

  175. <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>html</span><span class="token punctuation">&gt;</span></span>
    176. 

  176. </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br></div></div><p>接着创建 <code>app.ts</code> 作为入口文件：</p> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">import</span> axios <span class="token keyword">from</span> <span class="token string">'../../src/index'</span>
    177. 

  177. 

  178. <span class="token function">axios</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    179. 

  179.   url<span class="token operator">:</span> <span class="token string">'/extend/post'</span><span class="token punctuation">,</span>
    180. 

  180.   method<span class="token operator">:</span> <span class="token string">'post'</span><span class="token punctuation">,</span>
    181. 

  181.   data<span class="token operator">:</span> <span class="token punctuation">{</span>
    182. 

  182.     msg<span class="token operator">:</span> <span class="token string">'hi'</span>
    183. 

  183.   <span class="token punctuation">}</span>
    184. 

  184. <span class="token punctuation">}</span><span class="token punctuation">)</span>
    185. 

  185. 

  186. axios<span class="token punctuation">.</span><span class="token function">request</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    187. 

  187.   url<span class="token operator">:</span> <span class="token string">'/extend/post'</span><span class="token punctuation">,</span>
    188. 

  188.   method<span class="token operator">:</span> <span class="token string">'post'</span><span class="token punctuation">,</span>
    189. 

  189.   data<span class="token operator">:</span> <span class="token punctuation">{</span>
    190. 

  190.     msg<span class="token operator">:</span> <span class="token string">'hello'</span>
    191. 

  191.   <span class="token punctuation">}</span>
    192. 

  192. <span class="token punctuation">}</span><span class="token punctuation">)</span>
    193. 

  193. 

  194. axios<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">'/extend/get'</span><span class="token punctuation">)</span>
    195. 

  195. 

  196. axios<span class="token punctuation">.</span><span class="token function">options</span><span class="token punctuation">(</span><span class="token string">'/extend/options'</span><span class="token punctuation">)</span>
    197. 

  197. 

  198. axios<span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span><span class="token string">'/extend/delete'</span><span class="token punctuation">)</span>
    199. 

  199. 

  200. axios<span class="token punctuation">.</span><span class="token function">head</span><span class="token punctuation">(</span><span class="token string">'/extend/head'</span><span class="token punctuation">)</span>
    201. 

  201. 

  202. axios<span class="token punctuation">.</span><span class="token function">post</span><span class="token punctuation">(</span><span class="token string">'/extend/post'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span> msg<span class="token operator">:</span> <span class="token string">'post'</span> <span class="token punctuation">}</span><span class="token punctuation">)</span>
    203. 

  203. 

  204. axios<span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span><span class="token string">'/extend/put'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span> msg<span class="token operator">:</span> <span class="token string">'put'</span> <span class="token punctuation">}</span><span class="token punctuation">)</span>
    205. 

  205. 

  206. axios<span class="token punctuation">.</span><span class="token function">patch</span><span class="token punctuation">(</span><span class="token string">'/extend/patch'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span> msg<span class="token operator">:</span> <span class="token string">'patch'</span> <span class="token punctuation">}</span><span class="token punctuation">)</span>
    207. 

  207. </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br><span class="line-number">31</span><br></div></div><p>然后在命令行运行 <code>npm run dev</code>，接着打开 chrome 浏览器，访问 <code>http://localhost:8080/</code> 即可访问我们的 demo 了，我们点到 <code>Extend</code> 目录下，通过开发者工具的 network 部分我们可以看到每个请求的发送情况。</p> <p>至此我们支持了对 <code>axios</code> API 的扩展，把它变成了一个混合对象。官方的 <code>axios</code> 实例除了支持了 <code>axios(config)</code>，还支持了传入 2 个参数 <code>axios(url, config)</code>，这里就涉及到函数重载的概念了，下一节我们来实现这个 feature。</p></div></div>  <div class="page-edit"><div class="edit-link"><a href="https://github.com/heBody/blog/edit/master/docs/《TypeScript 从零实现 axios》/06.ts-axios 接口扩展/01.扩展接口.md" target="_blank" rel="noopener noreferrer">编辑</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="tags"><a href="/blog/tags/?tag=TypeScript" title="标签">#TypeScript</a></div> <div class="last-updated"><span class="prefix">上次更新:</span> <span class="time">2022/12/14, 19:36:42</span></div></div> <div class="page-nav-wapper"><div class="page-nav-centre-wrap"><a href="/blog/pages/22d581d8c2860b8a/" class="page-nav-centre page-nav-centre-prev"><div class="tooltip">错误信息增强</div></a> <a href="/blog/pages/8af227eae851ec97/" class="page-nav-centre page-nav-centre-next"><div class="tooltip">axios 函数重载</div></a></div> <div class="page-nav"><p class="inner"><span class="prev">
    208. 

  208.         ←
    209. 

  209.         <a href="/blog/pages/22d581d8c2860b8a/" class="prev">错误信息增强</a></span> <span class="next"><a href="/blog/pages/8af227eae851ec97/">axios 函数重载</a>→
    210. 

  210.       </span></p></div></div></div> <div class="article-list"><div class="article-title"><a href="/blog/archives/" class="iconfont icon-bi">最近更新</a></div> <div class="article-wrapper"><dl><dd>01</dd> <dt><a href="/blog/pages/922650/"><div>
    211. 

  211.             Git修改分支名
    212. 

  212.             <!----></div></a> <span class="date">08-11</span></dt></dl><dl><dd>02</dd> <dt><a href="/blog/pages/55f894/"><div>
    213. 

  213.             CSS给table的tbody添加滚动条
    214. 

  214.             <!----></div></a> <span class="date">06-29</span></dt></dl><dl><dd>03</dd> <dt><a href="/blog/pages/829589/"><div>
    215. 

  215.             我做了一个手写春联小网页，祝大家虎年暴富
    216. 

  216.             <span class="title-tag">
    217. 

  217.               原创
    218. 

  218.             </span></div></a> <span class="date">01-28</span></dt></dl> <dl><dd></dd> <dt><a href="/blog/archives/" class="more">更多文章&gt;</a></dt></dl></div></div></main></div> <div class="footer"><div class="icons"><a href="mailto:30363811@qq.com" title="发邮件" target="_blank" class="iconfont icon-youjian"></a><a href="https://github.com/heBody" title="GitHub" target="_blank" class="iconfont icon-github"></a></div> 
    219. 

  219.     Copyright © 2016-2022
    220. 

  220.     <span>Hesb | <a href="https://github.com/heBody/blob" target="_blank">MIT License</a></span></div> <div class="buttons"><div title="返回顶部" class="button blur go-to-top iconfont icon-fanhuidingbu" style="display:none;"></div> <div title="去评论" class="button blur go-to-comment iconfont icon-pinglun" style="display:none;"></div> <div title="主题模式" class="button blur theme-mode-but iconfont icon-zhuti"><ul class="select-box" style="display:none;"><li class="iconfont icon-zidong">
    221. 

  221.           跟随系统
    222. 

  222.         </li><li class="iconfont icon-rijianmoshi">
    223. 

  223.           浅色模式
    224. 

  224.         </li><li class="iconfont icon-yejianmoshi">
    225. 

  225.           深色模式
    226. 

  226.         </li><li class="iconfont icon-yuedu">
    227. 

  227.           阅读模式
    228. 

  228.         </li></ul></div></div> <!----> <!----> <!----></div><div class="global-ui"><div></div></div></div>
    229. 

  229.     <script src="/blog/assets/js/app.90754bd5.js" defer></script><script src="/blog/assets/js/2.106f41fb.js" defer></script><script src="/blog/assets/js/3.6748bd5c.js" defer></script><script src="/blog/assets/js/183.544fef00.js" defer></script>
    230. 

  230.   </body>
    231. 

  231. </html>
    232.