demo
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue </title>
<script src="https://cdn.bootcss.com/vue/2.2.2/vue.min.js"></script>
<style>
.text-danger {
background: blue;
}
.active {
width: 100px;
height: 100px;
background: antiquewhite;
} </style>
</head>
<body>
<div id="app">
<div v-bind:class="[activeClass, errorClass]"></div>
</div> <script>
new Vue({
el: '#app',
data: {
/* 后面的覆盖前面的样式*/
errorClass: 'text-danger',
activeClass: 'active'
}
})
</script>
</body>
</html>
效果：
2018-03-20 13:36:35