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05-指令v-once.html

<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=, initial-scale=1.0">
    <title>Document</title>
    <style>
        [v-cloak] {
            display: none
        }
    </style>
</head>

<body>
    <div id="app">
        <div v-cloak v-once>{{msg}}</div>
        <div v-cloak>{{info}}</div>
        <button @click='change'>点击</button>
    </div>
    <script src="./js/vue.js"></script>
    <script>
        const vm = new Vue({
            el: '#app',
            data: {
                msg: 'v-once指令',
                info: '前端'
            },
            methods: {
                change: function () {
                    this.msg = 'haha'//没有造成页面的变化
                    this.info = 'nihao'
                }
            }
        })
    </script>
</body>

</html>