<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Vue 测试实例 - IT书包(www.itshubao.com)</title> <script src="https://cdn.bootcss.com/vue/2.2.2/vue.min.js"></script> </head> <body> <div id="app"> <div v-bind:class="classObject"></div> </div> </body> </html>
.active {
width: 100px;
height: 100px;
background: green;
}
.text-danger {
background: red;
}
new Vue({
el: '#app',
data: {
isActive: true,
error: null
},
computed: {
classObject: function () {
return {
active: this.isActive && !this.error,
'text-danger': this.error && this.error.type === 'fatal',
}
}
}
})