可能只有在网络慢时会出现,就因为 HTML 先加载,再加载 JS
<!doctype HTML>
<HTML lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Document</title>
<style>
p.active {color: red;}
p.title {font-weight: 700;}
[v-cloak]{display: none !important;}
</style>
</head>
<body>
<div id="App" v-cloak>
<p v-bind:class="{active:is_active}" class="title">
{{msg}}
</p>
</div>
</body>
<script src="/vendor/images/vue.js"></script>
<script>
new Vue ({
el: '#App',
data: {
msg: "hello",
is_active: true,
},
});
</script>
</HTML>