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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue 测试实例 - 菜鸟教程(runoob.com)</title>
<script src="https://cdn.staticfile.net/vue/2.2.2/vue.min.js"></script>
<style>
.active {
    width: 100px;
    height: 100px;
    background: green;
}
.text-danger {
    background: red;
}
</style>
</head>
<body>
<div id="app">
    <div v-bind:class="[activeClass, errorClass]"></div>
</div>
​
<script>
new Vue({
  el: '#app',
  data: {
    activeClass: 'active',
    errorClass: 'text-danger'
  }
})
</script>
</body>
</html>