<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>1.天气案例</title>
<script type="text/javascript" src="../vue.js"></script>
</head>
<body>
<div id="root">
<h3>今天天气很{{showInfo}}</h3>
<button @click="changeWeather">切换天气</button>
</div>
<script>
Vue.config.productionTip = false
const vm = new Vue({
el: "#root",
data: {
'isHot': true,
},
computed: {
showInfo() {
return this.isHot ? '炎热' : '凉爽'
}
},
methods:{
changeWeather() {
this.isHot = !this.isHot
}
}
})
</script>
</body>
</html>