准备步骤如第一天
代码：（测试注意事项：js中的代码依次开启测试，不可全部开启，会报错）
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="../node_modules/vue/dist/vue.js"></script>
<script src="../node_modules/vue-resource/dist/vue-resource.js"></script>
</head>
<style>
.active {
width: 100px;
height: 100px;
background: green;
}
.text-danger {
background: red;
}
</style>
<body>
<div id="app">
<div class="static"
v-bind:class="{ active: isActive, 'text-danger': hasError }">
</div>
</div>
<script>
new Vue({
el: '#app',
data: {
isActive: false,
hasError: true
}
})
</script>
</body>
</html>