index.html
<!DOCTYPE html>
<html lang="en" xmlns:v-on="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="https://unpkg.com/vue"></script>
<link rel="stylesheet" href="style.css">
</head>
<body>
<!--vue-app是根容器-->
<div id="vue-app">
<h1>双向数据绑定/ input / select / textarea /</h1>
<label>姓名:</label>
<input ref="name" type="text" v-model="name">
<span>{{name}}</span>
<label>年龄:</label>
<!--按回车键后才触发此方法-->
<input ref="age" type="text" v-on:keyup.enter="logAge">
<span>{{age}}</span>
</div>
<script src="app.js"></script>
</body>
</html>
app.js
new Vue({
el:"#vue-app",
data:{
name:"",
age:""
},
methods:{
logName:function () {
//console.log("你正在输入名字")
//this.name=this.$refs.name.value;
},
logAge:function () {
//console.log("你正在输入年龄")
this.age=this.$refs.age.value;
},
}
});