1.谷歌插件 vue.js Devool
2.chorme:verson 查看安装地址，个人安装路径 extions
3.允许访问网址
4.重启刷新
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57<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<!-- <script src="https://cdn.bootcss.com/vue/2.4.2/vue.min.js"></script> -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.9/vue.js"></script>
<style>
#app{width: 1000px;margin: 0 auto}
.ainput{ display:inline-block ;
width:10%;
height: 35px;
line-height: 35px;
margin: 30px auto;
box-sizing: border-box;
padding-left: 4px;
border-radius: 4px;
border:1px solid #ccc;
outline: 0;
box-shadow: 0 0 5px #ccc;}
.del{width: 10%;height: 35px;line-height: 35px;box-sizing: border-box;border-radius: 4px;background:red;color: #fff;border: none;}
</style>
</head>
<body>
<div id="app">
<input type="text" class="ainput" v-model='augend' @keyup="comput">
<span>+</span>
<input type="text" class="ainput" v-model='addend' @keyup="comput">
<span>=</span>
<input type="text" class="ainput" :value="sum">
<br>
<button class="del" @click="rest">清空数据</button>
</div>
<script>
const app=new Vue({
el:"#app",
data:{
augend:'',
addend:'',
sum:''
},
methods:{
comput(){
this.sum=Number(this.augend)+Number(this.addend)
},
rest(){
this.sum=this.addend=this.augend='';
this.$emit('rest')
}
}
})
</script>
</body>
</html>