<!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">
<div>
<span>名:</span>
<span>
<input type="text" v-model='firstName'>
</span>
</div>
<div>
<span>姓:</span>
<span>
<input type="text" v-model='lastName'>
</span>
</div>
<div>{{fullName}}</div>
</div>
<script type="text/javascript" src="./js/vue.js"></script>
<script>
/* 侦听器 */
var vm = new Vue({
el: '#app',
data: {
firstName: 'Jim',
lastName: 'Green',
fullName: 'Jim Green'
},
computed: {
fullName: function() {
return this.firstName + ' ' + this.lastName;
}
},
watch: {
firstName: function(val) {
this.fullName = val + ' ' + this.lastName;
},
lastName: function(val) {
this.fullName = this.firstName + ' ' + val;
}
}
})
</script>
</body>
</html>
