vue/v-if.html at master · Yancyji/vue · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="js/vue.min.js"></script>
</head>
<body>

    <!-- v-if and v-show -->
    <div id="app">

        <input type="button" value="点我" @click="toggle">
        <h3 v-if="flag">v-if</h3>
        <h3 v-show="flag">v-show</h3>
    </div>

    <script>
        let vm = new Vue({
            el:'#app',
            data:{
                flag:true
            },
        methods:{
            toggle(){
                this.flag = !this.flag
            }
        }
        })

    </script>

</body>
</html>