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第六课demo_逻辑渲染.html

<!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>
    <script src="./vue3.js"></script>
</head>
<body>
    <div id="root">
        <div>
            <span v-if="bl">真巧呐</span>
            <span v-else>其实我想说的是：只要你一想到我，我会第一时间出现在你的面前！</span>
        </div>
        <input type="button" value="Click" @click="change">
    </div>
    <script>

        var appOption={
            data() {
                return {
                    val:'',
                    bl:true,
                }
            },
            methods: {
                change(){
                    this.bl=!this.bl
                }
            },
            created() {
                window.vm=this
            },
        }

        const app = Vue.createApp(appOption).mount('#root')

    </script>
</body>
</html>