<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<script type="text/javascript" src="vue.js"></script>
<body>
<div id="root">
<h2>今天的天气是：{{name}}</h2>
<button @click="change">点击切换</button>
</div>
<script type="text/javascript">
var root = new Vue({
el: '#root',
data: { weather: true },
computed: {
name() {
return this.weather ? "晴天" : "下雨";
}
},
methods: {
change() {
this.weather = !this.weather
}
},
})
</script>
</body>
</html>
