1. v-on绑定：on:click点击事件，再触发方法里面的add()或del()
2. 详情查看官方文档：https://cn.vuejs.org/v2/api/#v-on
1 <!DOCTYPE html>
2 <html lang="en">
3
4 <head>
5 <meta charset="UTF-8">
6 <meta name="viewport" content="width=device-width, initial-scale=1.0">
7 <meta http-equiv="X-UA-Compatible" content="ie=edge">
8 <title>Document</title>
9 <!-- Step1.对于vue,可以用cdn -->
10 <script src="https://cdn.bootcss.com/vue/2.5.17-beta.0/vue.min.js"></script>
11 <style>
12 #app div{
13 padding: 2%;
14 margin-bottom: 1%;
15 border-bottom: 1px solid #ddd;
16 background-color: blanchedalmond;
17 }
18 </style>
19 </head>
20
21 <body>
22
23
24 <div id="app">
25 <div>皮卡丘要嗑{{count}}瓶药</div>
26 <button v-on:click="add">加</button>
27 <button v-on:click="del">减</button>
28 </div>
29
30 <script type="text/javascript">
31 var app = new Vue({
32 el: '#app',
33 // 初始化数据
34 data: {
35 count: 1
36 },
37 // 方法.
38 methods: {
39 add() {
40 this.count++;
41 },
42 del() {
43 this.count--;
44 }
45 }
46 })
47 </script>
48 </body>
49
50 </html>