<!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>