1 line
36 KiB
JavaScript
1 line
36 KiB
JavaScript
(window.webpackJsonp=window.webpackJsonp||[]).push([[149],{532:function(t,s,a){"use strict";a.r(s);var n=a(5),e=Object(n.a)({},(function(){var t=this,s=t._self._c;return s("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[s("h1",{attrs:{id:"_05-事件处理"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#_05-事件处理"}},[t._v("#")]),t._v(" 05. 事件处理")]),t._v(" "),s("h2",{attrs:{id:"与传统html绑定事件的区别"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#与传统html绑定事件的区别"}},[t._v("#")]),t._v(" 与传统HTML绑定事件的区别")]),t._v(" "),s("p",[t._v("传统的 HTML：")]),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 punctuation"}},[t._v("<")]),t._v("button")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token special-attr"}},[s("span",{pre:!0,attrs:{class:"token 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规范"),s("OutboundLink")],1),t._v("来定义这些合成事件，所以你不需要担心跨浏览器的兼容性问题。React 事件与原生事件不完全相同。如果想了解更多，请查看 "),s("a",{attrs:{href:"https://zh-hans.reactjs.org/docs/events.html",target:"_blank",rel:"noopener noreferrer"}},[s("code",[t._v("SyntheticEvent")]),s("OutboundLink")],1),t._v(" 参考指南。")]),t._v(" "),s("h2",{attrs:{id:"绑定事件的方式"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#绑定事件的方式"}},[t._v("#")]),t._v(" 绑定事件的方式")]),t._v(" "),s("p",[t._v("使用 React 时，你一般不需要使用 "),s("code",[t._v("addEventListener")]),t._v(" 为已创建的 DOM 元素添加监听器。事实上，你只需要在该元素初始渲染的时候添加监听器即可。")]),t._v(" "),s("p",[t._v("当你使用 "),s("a",{attrs:{href:"https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Classes",target:"_blank",rel:"noopener noreferrer"}},[t._v("ES6 class"),s("OutboundLink")],1),t._v(" 语法定义一个组件的时候，通常的做法是将事件处理函数声明为 class 中的方法。例如，下面的 "),s("code",[t._v("Toggle")]),t._v(" 组件会渲染一个让用户切换开关状态的按钮：")]),t._v(" "),s("div",{staticClass:"language-jsx 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