lovecoding
/
VIP29


			
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>模板</title>
    <!-- 引入文件   -->
    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
    <style>
        .active {
            height: 200px;
            width: 200px;
            border: 1px solid red;
        }
    </style>
</head>
<body>
<div id="app">


</div>
</body>
<script>
    const { createApp, ref  ,onMounted ,onBeforeMount } = Vue;
    createApp({
        setup() {

            onBeforeMount( () =>{
                console.log(`the component is now onBeforeMount.`)
            })

            onMounted( () => {
                console.log(`the component is now mounted.`)

                //加载数据列表
            })

        }
    }).mount('#app'); //createApp创建对象 挂在到app
</script>
</html>