整理文档，搜刮出一个使用 Vue.js 仿百度搜索框的实例代码，稍微整理精简一下做下分享。
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Vue demo</title> <style type="text/css"> .bg { background: #ccc; } </style> <script src="https://cdn.bootcss.com/vue/2.1.7/vue.min.js"></script> <script src="https://cdn.bootcss.com/vue-resource/1.3.1/vue-resource.min.js"></script> <script type="text/javascript"> window.onload = function() { new Vue({ el: '#box', data: { inputText: '', text: '', nowIndex: -1, result: [] }, methods: { show: function(ev) { if (ev.keyCode == 38 || ev.keyCode == 40) { if (this.nowIndex < -1){ return; } if (this.nowIndex != this.result.length && this.nowIndex != -1) { this.inputText = this.result[this.nowIndex]; } return; } if (ev.keyCode == 13) { window.open('https://www.baidu.com/s?wd=' + this.inputText, '_blank'); this.inputText = ''; } this.text = this.inputText; this.$http.jsonp('https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su', { params: { wd: this.inputText }, jsonp: 'cb' }).then(res => { this.result = res.data.s; }) }, down: function() { this.nowIndex++; if (this.nowIndex == this.result.length) { this.nowIndex = -1; this.inputText = this.text; } }, up: function() { this.nowIndex--; if (this.nowIndex < -1){ this.nowIndex = -1; return; } if (this.nowIndex == -1) { this.nowIndex = this.result.length; this.inputText = this.text; } } } }); } </script> </head> <body> <div> <input type="text" placeholder="请输入搜索内容" v-model='inputText' @keyup='show($event)' @keydown.down='down()' @keydown.up.prevent='up()'> <ul> <li v-for="(item, index) in result" :class='{bg: index==nowIndex}'> {{item}} </li> </ul> </div> </body> </html>