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  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">
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    22. 

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    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 open"><span>JavaScript文章</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/blog/pages/a61298/" class="sidebar-link">33个非常实用的JavaScript一行代码</a></li><li><a href="/blog/pages/8143cc480faf9a11/" class="sidebar-link">new命令原理</a></li><li><a href="/blog/pages/b1af5cb8996363c5/" aria-current="page" class="active sidebar-link">ES5面向对象</a></li><li><a href="/blog/pages/1f4123be6f45abcd/" class="sidebar-link">ES6面向对象</a></li><li><a href="/blog/pages/e808fba1fa8fbab2/" class="sidebar-link">多种数组去重性能对比</a></li><li><a href="/blog/pages/40b4db2d38ba85f2/" class="sidebar-link">JS随机打乱数组</a></li><li><a href="/blog/pages/40f623be692cf8bc/" class="sidebar-link">判断是否为移动端浏览器</a></li><li><a href="/blog/pages/f1acb712033ac8da/" class="sidebar-link">将一维数组按指定长度转为二维数组</a></li><li><a href="/blog/pages/0f6a0ac99b62ede5/" class="sidebar-link">防抖与节流函数</a></li><li><a href="/blog/pages/7a91be2d502346ce/" class="sidebar-link">JS获取和修改url参数</a></li><li><a href="/blog/pages/fd4a16d56b83c1bc/" class="sidebar-link">比typeof运算符更准确的类型判断</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>三级目录</span> <span class="arrow right"></span></p> <!----></section></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>学习笔记</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/web/#前端" data-v-06970110>前端</a></li><li data-v-06970110><a href="/blog/web/#JavaScript文章" data-v-06970110>JavaScript文章</a></li></ul> <div class="info" data-v-06970110><div title="作者" class="author iconfont icon-touxiang" data-v-06970110><a href="https://github.com/heBody" target="_blank" title="作者" class="beLink" data-v-06970110>heBody</a></div> <div title="创建时间" class="date iconfont icon-riqi" data-v-06970110><a href="javascript:;" data-v-06970110>2020-02-22</a></div> <!----></div></div></div> <!----> <div class="content-wrapper"><!----> <h1><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAeCAYAAAA7MK6iAAAAAXNSR0IArs4c6QAABH1JREFUSA3tVl1oHFUUPmdmd2ltklqbpJDiNnXFmgbFktho7YMPNiJSSZM0+CAYSkUELVhM6YuwIPpgoOKDqOBDC0XE2CQoNtQXBUFTTcCi+Wlh1V2TQExsUzcltd3M9Tt3ZjZzZ2fT+OJTL8yeM+eee757fmeJbq//KQL8X3DUSFOcfr7cRsRtxNQMWueeVzOkaITIGqQHNg5y8+jNW9ldM7A6nTpAjuolUikAwq7CE3WcM2RRDz+XGVgN3FptU/aUSlvq9Pa3iZ1+sgAqJyyAFqkipd9dqiwHF3P65YycLWc/6sqGrvoEoIp6DOFaX5h6+dnfjkWprwqsPk0dUGq5vySwDImC10KxFHgGL1SWoc92O3eVht09qdXNH11I2SsTsJYqMWzihqGMi+A+Garf3BAuuLI5oGlULyNfyB/HYNujwktOfRrMr5t77NmevqaUopx0grnKAyvVpmwUDB4x6FPXuGvYLTDwWsejwgtgkYKPqRJg8SV6xaiZ3ZTppGneS4yfH5/66fZSDHv+QZci/+h5c5UHtpy67JUqGppM0sh0Nc1dW6/N1W5Yoqat8/TU/VnadmdeW2PLLSyh0cvxBs3KbqTmwYPpxN4do/mzE8nEpvX/UMu2Wbp74zUAK5q6WkHns7V0eWkdPbPzd3rxkTGybadYySumVzhcaJFbs5UrEkQ/+CK8gF5dnh/6ciIZ73gwQ927L1IitoxKLXYP3SjYdOrHHfTZhRRlFyrorafPk20B3HPD1y2G3qKZME5Jcf3t/HUC13/8tSd++vqFveMUTwAUxSUFI1QekR1+bIze3D9MF2aq6cPvG72CgnldWCFqyRw3lwH8ZMerjTD9ElRO7Gv44wNpC90aASqGfVlz/Rx17srQ57/UU26hkhQqUB7dBR71WmzQhHUnblGmVOEw0jhbV1n9OlXUDCIRGaNV5Jp43N516fN7JmnTHdfp7Hgy0luO4aMhtkLL8Bi3bUWYvzh5Mn1dTxrL6QmGuRhGL/TiTTxRoEdTszSaq9GR0NGA3KdkOz3hqSV3MIDhQ5IVX/Ivx3umBti2es2h4eZby7x8br1rkf7Mo90AqC8aQ3sJeNzqFRu+vSANAQe3PL7l0HGOAdwDCeZYvNKeoZp1Qfs6Aipndh86HmFRi0LAnEO47wsqM6cdfjh3jBPUzhZy7nvlUfFsamED1VQt6aISHVymXZ/B2aCtIG8AI8xfobj2d3en1wWVhOeHELKmLQ1s211s88comkv4UCwWyF787mJdYXtNfhKAXVqnKTq8QZvGAGGOfaTo5pGZ/PwbUCr5+DPr/1J92JNHr9aOl/F3iI5+O1nfybsGxoimvZ3ViWSluDITw3P37mypheDIPY0tw7+O/5ApbkYw+zpfaUVu32Pi98+defdUhEpZkRFq0aqyNh9FuL9hpYbEm6iwi0z2REd09ZmyENEbuhjDWzKvZXTqKYaBIr3tt5kuPtQBZFvEUwHt60vfCNu41XsksH9Ij1BMMz1Y0OOunHNShFIP5868g5zeXmuLwL9T4b6Q2+KejgAAAABJRU5ErkJggg==">ES5面向对象<!----></h1>  <div class="theme-vdoing-content content__default"><h1 id="es5面向对象"><a href="#es5面向对象" class="header-anchor">#</a> ES5面向对象</h1> <div class="language-js line-numbers-mode"><pre class="language-js"><code><span class="token comment">//面向对象封装</span>
    26. 

  26. <span class="token keyword">function</span> <span class="token function">Student</span><span class="token punctuation">(</span><span class="token parameter">props</span><span class="token punctuation">)</span><span class="token punctuation">{</span> <span class="token comment">// 构造函数 （构造函数内定于属性。尊从首字母大写的约定）</span>
    27. 

  27.   <span class="token keyword">this</span><span class="token punctuation">.</span>name <span class="token operator">=</span> props<span class="token punctuation">.</span>name <span class="token operator">||</span> <span class="token string">'匿名'</span><span class="token punctuation">;</span>  <span class="token comment">// 默认‘匿名’</span>
    28. 

  28.   <span class="token keyword">this</span><span class="token punctuation">.</span>grade <span class="token operator">=</span> props<span class="token punctuation">.</span>grade <span class="token operator">||</span> <span class="token number">1</span><span class="token punctuation">;</span>
    29. 

  29. <span class="token punctuation">}</span>
    30. 

  30. <span class="token class-name">Student</span><span class="token punctuation">.</span>prototype<span class="token punctuation">.</span><span class="token function-variable function">hello</span> <span class="token operator">=</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span> <span class="token comment">// 在构造函数的原型上定义方法</span>
    31. 

  31.   console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'你好,'</span><span class="token operator">+</span> <span class="token keyword">this</span><span class="token punctuation">.</span>name <span class="token operator">+</span><span class="token string">'同学，你在'</span><span class="token operator">+</span> <span class="token keyword">this</span><span class="token punctuation">.</span>grade<span class="token operator">+</span><span class="token string">'年级'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    32. 

  32. <span class="token punctuation">}</span>
    33. 

  33. 

  34. 

  35. <span class="token comment">//使用</span>
    36. 

  36. <span class="token keyword">function</span> <span class="token function">createStudent</span><span class="token punctuation">(</span><span class="token parameter">props</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token comment">// 对于new构造函数的封装，其优点：一是不需要new来调用，二是参数灵活</span>
    37. 

  37.     <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">Student</span><span class="token punctuation">(</span>props <span class="token operator">||</span> <span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token comment">// 通过new创建构造函数，并传入参数/属性</span>
    38. 

  38. <span class="token punctuation">}</span>
    39. 

  39. 

  40. <span class="token keyword">var</span> niming <span class="token operator">=</span> <span class="token function">createStudent</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> 
    41. 

  41. niming<span class="token punctuation">.</span><span class="token function">hello</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    42. 

  42. 

  43. <span class="token keyword">var</span> xiaoming <span class="token operator">=</span> <span class="token function">createStudent</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    44. 

  44.   <span class="token literal-property property">name</span><span class="token operator">:</span><span class="token string">'小明'</span><span class="token punctuation">,</span>
    45. 

  45.   <span class="token literal-property property">grade</span><span class="token operator">:</span><span class="token number">2</span>
    46. 

  46. <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    47. 

  47. xiaoming<span class="token punctuation">.</span><span class="token function">hello</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    48. 

  48. 

  49. 

  50. <span class="token comment">//继承</span>
    51. 

  51. <span class="token keyword">function</span> <span class="token function">inherits</span><span class="token punctuation">(</span><span class="token parameter">Child<span class="token punctuation">,</span> Parent</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token comment">// 继承的封装方法 inherits(子类, 父类) </span>
    52. 

  52.     <span class="token keyword">var</span> <span class="token function-variable function">F</span> <span class="token operator">=</span> <span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">;</span> <span class="token comment">// 定义空方法F</span>
    53. 

  53.     <span class="token class-name">F</span><span class="token punctuation">.</span>prototype <span class="token operator">=</span> <span class="token class-name">Parent</span><span class="token punctuation">.</span>prototype<span class="token punctuation">;</span> <span class="token comment">//F原型指向父类原型</span>
    54. 

  54.     <span class="token class-name">Child</span><span class="token punctuation">.</span>prototype <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">F</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 子类原型指向 new F() 方法</span>
    55. 

  55.     <span class="token class-name">Child</span><span class="token punctuation">.</span>prototype<span class="token punctuation">.</span>constructor <span class="token operator">=</span> Child<span class="token punctuation">;</span> <span class="token comment">// 修正子类原型上的构造函数为子类本身函数</span>
    56. 

  56. <span class="token punctuation">}</span>
    57. 

  57. 

  58. <span class="token keyword">function</span> <span class="token function">PrimaryStudent</span><span class="token punctuation">(</span><span class="token parameter">props</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token comment">//定义子类 构造函数</span>
    59. 

  59.     <span class="token function">Student</span><span class="token punctuation">.</span><span class="token function">call</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">,</span> props<span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 修正this指向</span>
    60. 

  60.     <span class="token keyword">this</span><span class="token punctuation">.</span>age <span class="token operator">=</span> props<span class="token punctuation">.</span>age <span class="token operator">||</span> <span class="token number">8</span><span class="token punctuation">;</span> <span class="token comment">//新增子类属性</span>
    61. 

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

  62. 

  63. <span class="token function">inherits</span><span class="token punctuation">(</span>PrimaryStudent<span class="token punctuation">,</span> Student<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//调用继承封装方法实现继承</span>
    64. 

  64. 

  65. <span class="token class-name">PrimaryStudent</span><span class="token punctuation">.</span>prototype<span class="token punctuation">.</span><span class="token function-variable function">getAge</span> <span class="token operator">=</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span> <span class="token comment">//对子类添加方法</span>
    66. 

  66.   console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>name <span class="token operator">+</span><span class="token string">'同学，你今年'</span><span class="token operator">+</span> <span class="token keyword">this</span><span class="token punctuation">.</span>age <span class="token operator">+</span><span class="token string">'岁'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    67. 

  67. <span class="token punctuation">}</span>
    68. 

  68. 

  69. 

  70. <span class="token comment">//使用继承后的</span>
    71. 

  71. <span class="token keyword">function</span> <span class="token function">createPrimaryStudent</span><span class="token punctuation">(</span><span class="token parameter">props</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token comment">// 对于new构造函数的封装，其优点：一是不需要再new来调用，二是参数灵活</span>
    72. 

  72.     <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">PrimaryStudent</span><span class="token punctuation">(</span>props <span class="token operator">||</span> <span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token comment">// 通过new创建构造函数，并传入参数/属性</span>
    73. 

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

  74. 

  75. <span class="token keyword">var</span> xiaohong <span class="token operator">=</span> <span class="token function">createPrimaryStudent</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    76. 

  76.   <span class="token literal-property property">name</span><span class="token operator">:</span><span class="token string">'小红'</span><span class="token punctuation">,</span>
    77. 

  77.   <span class="token literal-property property">grade</span><span class="token operator">:</span><span class="token number">3</span><span class="token punctuation">,</span>
    78. 

  78.   <span class="token literal-property property">age</span><span class="token operator">:</span><span class="token number">10</span>
    79. 

  79. <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    80. 

  80. xiaohong<span class="token punctuation">.</span><span class="token function">hello</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    81. 

  81. xiaohong<span class="token punctuation">.</span><span class="token function">getAge</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    82. 

  82. </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><span class="line-number">56</span><br><span class="line-number">57</span><br></div></div></div></div>  <div class="page-edit"><div class="edit-link"><a href="https://github.com/heBody/blog/edit/master/docs/01.前端/25.JavaScript文章/03.ES5面向对象.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="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/8143cc480faf9a11/" class="page-nav-centre page-nav-centre-prev"><div class="tooltip">new命令原理</div></a> <a href="/blog/pages/1f4123be6f45abcd/" class="page-nav-centre page-nav-centre-next"><div class="tooltip">ES6面向对象</div></a></div> <div class="page-nav"><p class="inner"><span class="prev">
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  84.         <a href="/blog/pages/8143cc480faf9a11/" class="prev">new命令原理</a></span> <span class="next"><a href="/blog/pages/1f4123be6f45abcd/">ES6面向对象</a>→
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    86. 

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    88. 

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    89. 

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    92. 

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