Vue中computed的set和get方法 

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4   <meta charset="UTF-8">
 5   <meta name="viewport" content="width=device-width, initial-scale=1.0">
 6   <meta http-equiv="X-UA-Compatible" content="ie=edge">
 7   <title>Document</title>
 8   <!-- vue.js 引入 -->
 9   <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
10 </head>
11 <body>
12   <div id="app">
13     first name: <input type="text" v-model="firstName">
14     <br>
15     second name: <input type="text" v-model="lastName">
16     <br>
17     full name: <div>{{fullName}}</div>
18   </div>
19 
20   <script>
21     var app = new Vue({
22       el: '#app',
23       data () {
24         return {
25           firstName: '',
26           lastName: ''
27         }
28       },
29       computed: {
30         // 输入firstName和lastName自动拼成fullName
31         // 方法：1
32         /*fullName: function () {
33           return this.firstName + ' ' + this.lastName
34         }*/
35         // 方法：2
36         /*fullName: {
37           get: function () {
38             return this.firstName + ' ' + this.lastName
39           }
40         }*/
41 
42         // 输入fullName后自动拆分成两个name
43         fullName: {
44           get: function () {
45             return this.firstName + ' ' + this.lastName
46           },
47           set: function (fullName) {
48             var arr = fullName.split(' ');
49             // 以空格来分，将一个字符串分割成了两个字符串
50             this.firstName = arr[0]
51             this.lastName = arr[1]
52           }
53         }
54       }
55     })
56   </script>
57 </body>
58 </html>

结果如图：

Vue

posted @ 2018-10-15 21:56  辰辰plus  阅读(6195)  评论(0)  编辑  收藏  举报