<!DOCTYPE html>
<html lang="zh">
<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">
<script src="https://cdn.jsdelivr.net/npm/vue@2.6.12"></script>
<title>Vue自学: v-model的使用（双向绑定input标签）</title>
</head>
<body>
<!-- v-model实现双向绑定：方法1 -->
<div id="app">
<input type="text" name="" v-model="message"/>
{{message}}
</div>
<!-- v-model实现双向绑定：方法2:原生方法实现 -->
<div id="app1">
<input type="text" v-bind:value="message" v-on:input="getValue"/>
{{message}}
</div>
<!-- v-model实现双向绑定：方法3:表达式实现 -->
<div id="app2">
<input type="text" v-bind:value="message" v-on:input="message = $event.target.value"/>
{{message}}
</div>
</body>
<script type="text/javascript">
const app = new Vue({
el:’#app’,
data:{
message:’this is a input’
},
methods:{
}
})
const app1 = new Vue({
el:’#app1’,
data:{
message:’this is a input’
},
methods:{
getValue($event){
this.message = $event.target.value
}
}
})
const app2 = new Vue({
el:’#app2’,
data:{
message:’this is a input’
},
methods:{
}
})
</script>
</html>
