demo.html
1 <!DOCTYPE html> 2 <html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml" xmlns:v-html="http://www.w3.org/1999/xhtml" 3 ??????xmlns:v-on="http://www.w3.org/1999/xhtml"> 4 <head> 5 ????<meta charset="UTF-8"> 6 ????<title>Vue Demo</title> 7 ????<!--自选版本--> 8 ????<!--<script src="https://cdn.jsdelivr.net/npm/vue@2.5.21/dist/vue.js"></script>--> 9 ????<!-- 开发环境版本，包含了有帮助的命令行警告 -->10 ????<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>11 ????<!-- 生产环境版本，优化了尺寸和速度 -->12 ????<!--<script src="https://cdn.jsdelivr.net/npm/vue"></script>-->13 ????<link href="style.css" rel="stylesheet">14 </head>15 <body>16 <div id="app">17 ????<div>18 ????????<h2>动态绑定CSS样式</h2>19 ????????<div>20 ????????????<h4>示例一</h4>21 ????????????<div v-on:click="varChangeColor = !varChangeColor" v-bind:class="{changeColor:varChangeColor}">22 ????????????????<span>点击切换颜色</span>23 ????????????</div>24 25 ????????????<hr>26 ????????????<h4>示例二</h4>27 ????????????<button v-on:click="varChangeColor = !varChangeColor">改变颜色</button>28 ????????????<button v-on:click="varChangeLength = !varChangeLength">改变长度</button>29 ????????????<button v-on:click="varChangeLength = !varChangeLength,varChangeColor = !varChangeColor">两者都改变</button>30 ????????????<!--computed属性封装对象-->31 ????????????<div v-bind:class="computedClass">32 ????????????????<span>测试内容</span>33 ????????????</div>34 ????????</div>35 36 ????</div>37 38 39 </div>40 <script src="app.js"></script>41 42 43 </body>44 </html>app.js
1 var app = new Vue({ 2 ????el: ‘#app‘, 3 ????data: { 4 ????????varChangeColor: false, 5 ????????varChangeLength: false, 6 ????}, 7 ????methods: {}, 8 ?9 ????computed: {10 ????????computedClass: function () {11 ????????????return {12 ????????????????changeColor: this.varChangeColor,13 ????????????????changeLength: this.varChangeLength14 ????????????}15 ????????},16 ????}17 })style.css
1 span { 2 ????background: red; 3 ????display: inline-block; 4 ????padding: 10px; 5 ????color: #fff; 6 ????margin: 10px 0; 7 } 8 ?9 .changeColor span {10 ????background: green;11 }12 13 .changeLength span:after {14 ????content: "length";15 ????margin-left: 10px;16 }截图：
Vue之动态绑定CSS样式
原文地址：https://www.cnblogs.com/gongxr/p/10364459.html