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05-Vue之本地应用v-on指令
阅读量:349 次
发布时间:2019-03-04

本文共 1122 字,大约阅读时间需要 3 分钟。

1. v-on指令

  • 作用:为元素绑定事件
  • 用法:v-on: 事件名="方法名"   简写: @事件名="方法名"       : 事件名无需写on
  • 方法内部可通过 this 关键字访问data中的数据
  • 完整代码
<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <meta name="viewport" content="width=device-width, initial-scale=1.0">    <title>Document</title></head><body>    <div id='app'>        <!-- v-on:事件='方法' -->        <input type="button" value='v-on指令' v-on:click='doIt'>        <!-- 简写 @事件='方法' -->        <input type="button" value='v-on简写' @click='doIt'>        <!-- 双击事件 -->        <input type="button" value='双击事件' @dblclick='doIt'>        <!-- 更改数据使用  this关键字 -->        <div id='app' @click='changeMes'>{  {mes}}</div>    </div>    <!-- 开发环境版本,包含了有帮助的命令行警告 -->    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>    <script>        var app = new Vue({            el:'#app',            data:{                mes:'加油!'            },            methods:{               doIt:function(){                    alert('大家好,我是测试小白!')               },               changeMes:function(){                   this.mes += "加油,海蛎子!"               }            }        })    </script></body></html>

 

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