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218.1d08fa09.js

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  1. (window.webpackJsonp=window.webpackJsonp||[]).push([[218],{543:function(t,s,a){"use strict";a.r(s);var n=a(3),r=Object(n.a)({},(function(){var t=this,s=t._self._c;return s("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[s("h1",{attrs:{id:"prop-验证-与-非-prop-的-attribute"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#prop-验证-与-非-prop-的-attribute"}},[t._v("#")]),t._v(" Prop 验证 与 非 Prop 的 Attribute")]),t._v(" "),s("h2",{attrs:{id:"prop-验证"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#prop-验证"}},[t._v("#")]),t._v(" Prop 验证")]),t._v(" "),s("p",[s("a",{attrs:{href:"https://cn.vuejs.org/v2/guide/components-props.html#Prop-%E9%AA%8C%E8%AF%81",target:"_blank",rel:"noopener noreferrer"}},[t._v("API"),s("OutboundLink")],1)]),t._v(" "),s("p",[t._v("子组件对父组件传递来的参数进行校验")]),t._v(" "),s("div",{staticClass:"language-js line-numbers-mode"},[s("pre",{pre:!0,attrs:{class:"language-js"}},[s("code",[t._v("Vue"),s("span",{pre:!0,attrs:{class:"token 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punctuation"}},[t._v(",")]),t._v("\n      "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// 对象或数组默认值必须从一个工厂函数获取")]),t._v("\n      "),s("span",{pre:!0,attrs:{class:"token function-variable function"}},[t._v("default")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(":")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("function")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n        "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("return")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token literal-property property"}},[t._v("message")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(":")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token string"}},[t._v("'hello'")]),t._v(" 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"),s("div",{staticClass:"line-numbers-wrapper"},[s("span",{staticClass:"line-number"},[t._v("1")]),s("br"),s("span",{staticClass:"line-number"},[t._v("2")]),s("br"),s("span",{staticClass:"line-number"},[t._v("3")]),s("br"),s("span",{staticClass:"line-number"},[t._v("4")]),s("br"),s("span",{staticClass:"line-number"},[t._v("5")]),s("br"),s("span",{staticClass:"line-number"},[t._v("6")]),s("br"),s("span",{staticClass:"line-number"},[t._v("7")]),s("br"),s("span",{staticClass:"line-number"},[t._v("8")]),s("br"),s("span",{staticClass:"line-number"},[t._v("9")]),s("br"),s("span",{staticClass:"line-number"},[t._v("10")]),s("br"),s("span",{staticClass:"line-number"},[t._v("11")]),s("br"),s("span",{staticClass:"line-number"},[t._v("12")]),s("br"),s("span",{staticClass:"line-number"},[t._v("13")]),s("br"),s("span",{staticClass:"line-number"},[t._v("14")]),s("br"),s("span",{staticClass:"line-number"},[t._v("15")]),s("br"),s("span",{staticClass:"line-number"},[t._v("16")]),s("br"),s("span",{staticClass:"line-number"},[t._v("17")]),s("br"),s("span",{staticClass:"line-number"},[t._v("18")]),s("br"),s("span",{staticClass:"line-number"},[t._v("19")]),s("br"),s("span",{staticClass:"line-number"},[t._v("20")]),s("br"),s("span",{staticClass:"line-number"},[t._v("21")]),s("br"),s("span",{staticClass:"line-number"},[t._v("22")]),s("br"),s("span",{staticClass:"line-number"},[t._v("23")]),s("br"),s("span",{staticClass:"line-number"},[t._v("24")]),s("br"),s("span",{staticClass:"line-number"},[t._v("25")]),s("br"),s("span",{staticClass:"line-number"},[t._v("26")]),s("br"),s("span",{staticClass:"line-number"},[t._v("27")]),s("br"),s("span",{staticClass:"line-number"},[t._v("28")]),s("br"),s("span",{staticClass:"line-number"},[t._v("29")]),s("br"),s("span",{staticClass:"line-number"},[t._v("30")]),s("br"),s("span",{staticClass:"line-number"},[t._v("31")]),s("br"),s("span",{staticClass:"line-number"},[t._v("32")]),s("br"),s("span",{staticClass:"line-number"},[t._v("33")]),s("br")])]),s("h2",{attrs:{id:"非-prop-的-attribute"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#非-prop-的-attribute"}},[t._v("#")]),t._v(" 非 Prop 的 Attribute")]),t._v(" "),s("p",[s("a",{attrs:{href:"https://cn.vuejs.org/v2/guide/components-props.html#%E9%9D%9E-Prop-%E7%9A%84-Attribute",target:"_blank",rel:"noopener noreferrer"}},[t._v("API"),s("OutboundLink")],1)]),t._v(" "),s("p",[t._v("当子组件没有定义对应的Prop来接收父组件传来的值时，这个值将会出现在组件根元素的"),s("code",[t._v("Attribute")]),t._v("上面。")]),t._v(" "),s("h3",{attrs:{id:"用处"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#用处"}},[t._v("#")]),t._v(" 用处")]),t._v(" "),s("p",[t._v("例如，想象一下你通过一个 Bootstrap 插件使用了一个第三方的 "),s("code",[t._v("<bootstrap-date-input>")]),t._v(" 组件，这个插件需要在其 "),s("code",[t._v("<input>")]),t._v(" 上用到一个 "),s("code",[t._v("data-date-picker")]),t._v(" attribute。我们可以将这个 attribute 添加到你的组件实例上：")]),t._v(" "),s("div",{staticClass:"language-html line-numbers-mode"},[s("pre",{pre:!0,attrs:{class:"language-html"}},[s("code",[s("span",{pre:!0,attrs:{class:"token tag"}},[s("span",{pre:!0,attrs:{class:"token tag"}},[s("span",{pre:!0,attrs:{class:"token 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    2.