vue的jsonp百度下拉菜单

通过vue的jsonp实现百度下拉菜单的请求，vue的版本是2.9.2

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Title</title>
 6     <script src="vue.min.js"></script>
 7     <script src="https://cdnjs.cloudflare.com/ajax/libs/vue-resource/1.3.4/vue-resource.min.js"></script>
 8     <style>
 9         .gray {
10             background-color: #ccc;
11         }
12     </style>
13     <script>
14         window.onload = function () {
15             new Vue({
16                 el: '#box',
17                 data: {
18                     myData: [],  //搜索下拉数据列表
19                     t1: '',      //输入框里的值
20                     now: -1      //输入框里面的值得索引，0位列表第一项
21                 },
22                 methods: {
23                     get: function (ev) {
24                         if(ev.keyCode==38 || ev.keyCode==40){ //当按照上下键的时候停止搜索
25                             return
26                         }
27                         if(ev.keyCode==13){
28                             window.open('https://www.baidu.com/s?wd='+this.t1) //打开百度搜索
29                         }
30                         this.$http.jsonp('https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su', {
31                             params: {
32                                 wd: this.t1  // 输入的关键词
33                             },
34                             jsonp: 'cb'  //callback函数的名称
35                         }).then(function (res) {
36                           this.myData=res.data.s;
37                           console.log(this.myData)
38                         }, function (err) {
39                             console.log(err.status);
40                         });
41                     },
42                     changeDown: function () {  //向下选择
43                         this.now++;
44                         if (this.now == this.myData.length) { //判断是否超出列表长度
45                             this.now = -1;
46                         }
47                         this.t1 = this.myData[this.now];  //改变输入框的值
48                     },
49                     changeUp: function () {  //向上选择
50                         this.now--;
51                         if (this.now == -2) {
52                             this.now = this.myData.length - 1;
53                         }
54                         this.t1 = this.myData[this.now];
55                     },
56                     dataLink: function (index) {  //鼠标点击跳转
57                         this.t1 = this.myData[index];
58                         this.now = index;
59                         window.open('https://www.baidu.com/s?wd=' + this.t1);
60                         this.t1 = ''
61                     }
62                 }
63             })
64         }
65     </script>
66 </head>
67 <body>
68 <div id="box">
69     <input type="text" v-model="t1" @keyup="get($event)" @keydown.down="changeDown()" @keydown.up.prevent="changeUp()">
70     <ul>
71         <li v-for="(value,index) in myData" :class="{gray:index==now}">
72             {{ value }}
73         </li>
74     </ul>
75     <p v-show="myData.length==0">暂无数据...</p>
76 </div>
77 
78 </body>
79 </html>