09-基础-系统指令-v-once 

<!DOCTYPE html>
<html>

<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>
</head>

<body>
    <div id='app'>
        <!-- v-once 希望元素只渲染一次  -->
        <p v-once>{{msg}}</p>
        <input type="text" v-model="msg">
    </div>
    <script src='./vue.js'></script>
    <script>
        new Vue({
            el: '#app',
            data: {
                msg: "abc"
            },
            methods: {
            }
        });
    </script>
</body>

</html>

posted @ 2019-05-28 21:13  193557749  阅读(313)  评论(0)  编辑  收藏  举报