[Vue.js] {{ message }} 網頁第一次載入時會看到原始碼的解法

by ShadowKao

HTML

<!doctype html>
<html>
<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">

    <title>Hello, Vue.js!</title>
    <style type="text/css">
        body {
            padding-top: 30px;
        } 

        /*使用v-cloak記得先定義CSS*/
        [v-cloak] {
            display: none !important;
        }
    </style>
</head>
<body>
    
    <div class="container" id="myApp">
        <div class="row">
            <div class="form-group col-12">
                {{ message }} <!--用戶第一次載入網頁或 Ctrl+F5 時，可能會先看到原始碼-->
            </div>
            <div class="form-group col-12" v-text="message">  <!--如果資料內容是html，則使用v-html-->
            </div>
            <div class="form-group col-12" v-cloak>  <!--如果容器內有其他DOM元素狀況，用v-cloak --> 
                <input type="text" placeholder="請輸入" /> {{message}}
            </div>
        </div>
        </div>


    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.3.1.min.js" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
    <!-- 引用Vue.js -->
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.js"></script>
    <script type="text/javascript">
 
        let myApp= new Vue({
            el: '#myApp',/*定義Vue作用範圍，el指的是element*/
           ...