基于Vue.js 2.0实现百度搜索框效果

使用Vue.js 2.0 模仿百度搜索框效果，供大家参考，具体内容如下

<!DOCTYPE html>
<html>
<head>
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=2.0, maximum-scale=1.0, minimum-scale=1.0">
 <title>Vue模拟百度搜索</title>
 <style type="text/css">
 body, html{
 padding: 0;
 margin: 0;
 }
 #box{
 margin-top: 80px;
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: center;
 }
 .input{
 width: 500px;
 height: 30px;
 text-indent: 4px;
 }
 .baidu input{
 height: 30px;
 cursor: pointer;
 color: #fff;
 letter-spacing: 1px;
 background: #3385ff;
 border: 1px solid #2d78f4;
 }
 ul{
 padding: 0;
 margin-top: 6px;
 }
 li{
 list-style: none;
 margin: 4px;
 }
 li:hover{
 background: #ccc;
 }
 .bgcolor {
 background: #ccc;
 }
 </style>
 <script src="https://cdn.bootcss.com/vue/2.4.2/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 (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;
   })
  },
  goto () {
   window.open('https://www.baidu.com/s?wd=' + this.inputText, '_blank');
   this.inputText = '';
  },
  gotoItem(item) {
   window.open('https://www.baidu.com/s?wd=' + item, '_blank');
   this.inputText = '';
  },
  down () {
   this.nowIndex++;
   if (this.nowIndex == this.result.length) {
   this.nowIndex = -1;
   this.inputText = this.text;
   }
  },
  up () {
   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 id="box">
 <img src="https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png" width="270" height="129">
 <div>
  <div>
  <input 
   type="text" 
   class="input" 
   placeholder="请输入搜索内容 " 
   v-model='inputText' 
   @keyup='show($event)' 
   @keydown.down='down()' 
   @keydown.up.prevent='up()'
  >
  <span class="baidu" @click="goto()">
   <input type="submit" value="百度一下" >
  </span>
  </div>
  
  <ul>
  <li v-for="(item, index) in result" :class='{bgcolor: index==nowIndex}' @click="gotoItem(item)">
   {{item}}
  </li>
  </ul>
 </div>

 </div>
</body> 
</html>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持呐喊教程。

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