<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>liangduanqi</title> <style> .gray{ background: #ccc; } </style> <script src="vue.js"></script> <script src="https://cdn.bootcss.com/vue-resource/0.7.0/vue-resource.js"></script> </head> <body> <div id="box"> <input type="text" v-model='t1' @keyup="get($event)" @keydown.down="changeDown()" @keydown.up.prevent="changeUp()"> {{t1}} <ul> <li v-for="v in myData" :class="{gray:$index==now}">{{v}}</li> </ul> <p v-show="myData.length==0">暂无数据。。。</p> </div> </body> <script> new Vue({ el:'#box', data:{ myData:[], t1:'', now:-1 }, methods:{ get:function (ev) { if(ev.keyCode==38 || ev.keyCode==40)return; if(ev.keyCode==13){ window.open('https://www.baidu.com/s?wd='+this.t1); this.t1=''; } this.$http.jsonp('https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su',{ wd:this.t1 },{ jsonp:'cb' }).then(function (res) { this.myData=res.data.s; },function () { }); }, changeDown:function () { this.now++; console.log(this.now,'Down'); if(this.now==this.myData.length)this.now=-1 this.t1=this.myData[this.now]; }, changeUp:function () { this.now--; if(this.now==-2)this.now=this.myData.length-1 this.t1=this.myData[this.now]; } } }) </script> </html>