<!DOCTYPE html>>
<html>
<head>
<title>天气案例</title>
<meta charset="UTF-8" />
<!-- 引入Vue -->
<script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
<!--
-->
<!-- 准备好一个容器 -->
<div id="root">
<h2>今天天气很{
{info}}</h2>
<button @click="changeWeather">切换天气</button>
</div>
</body>
<script type="text/javascript">
Vue.config.productionTip = false
new Vue({
el:'#root',
data:{
isHot:true
},
computed:{
info(){
return this.isHot ? '炎热' : '凉爽'
}
},
methods: {
changeWeather(){
this.isHot = !this.isHot
}
},
})
</script>
</html>