vue 实现百度下拉提示搜索功能

Bertha 。 2022-11-16 00:57 215阅读 0赞

# 一、概述 #

使用百度实现搜索功能，先来看一下效果图

![0f0c1a9235a44d4a8ba7d21bfff6ecd9.gif][]

# 二、代码实现 #

安装插件vue-resource

npm install vue-resource --save

这个插件主要是为了实现this.$http.jsonp()方法

修改main.js，引用vue-resource

import VueResource from 'vue-resource'
    Vue.use(VueResource)

test.vue

<template>
      <div class="container search-container">
        <h1 class="title">baidu-search</h1>
        <input type="text" class="form-control" placeholder="请输入想要搜索关键字" v-model="keyword" @keyup="get($event)"
               @keydown.down.prevent="selectDown"
               @keydown.up.prevent="selectUp">
        <ul>
          <li class="text-left" v-for="(value,index) in myData"><span class="text-success textprimary"
                                                                        :class="{gray:index==now}">{
          {value}}</span></li>
        </ul>
        <p>
        <h2 v-show="myData.length==0" class="text-warning text-left">(*^__^*)暂时没有数据</h2>
        </p>
      </div>
    </template>
    <script>
      export default {
        data() {
          return {
            myData:[],
            keyword:'',
            now:-1
          }
        },
        methods:{
          get:function (event) {
            if(event.keyCode==38||event.keyCode==40)return;
            if(event.keyCode==13){
              window.open('https://www.baidu.com/s?wd='+this.keyword);
              this.keyword=''
            }
            this.$http.jsonp('https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su?', {
              params: {
                wd: this.keyword
              },
              jsonp: 'cb'
            }).then((res) => {
              console.log("res11",res)
              this.myData = res.body.s
            })
          },
          selectDown:function () {
            this.now++;
            if(this.now==this.myData.length)this.now=-1;
            console.log(this.now)
            this.keyword=this.myData[this.now];
          },
          selectUp:function () {
            this.now--;
            if(this.now==-2)this.now=this.myData.length-1;
            this.keyword=this.myData[this.now];
          }
        }
      }
    </script>
    
    <style scoped>
      /*body {
          */
      /*  background-image: url("../../assets/background.jpg");*/
      /*  background-size: cover;*/
      /*}*/
    
      .title {
          
        color: #ffffff;
        text-align: left;
      }
    
      .gray {
          
        background-color: #dff0d8;
      }
    
      .textprimary {
          
        color: #3c763d;
        text-align: left;
        font-family: "Microsoft YaHei UI";
        font-size: larger;
        font-weight: bolder;
        font-size: 16px;
      }
      ul {
          
        list-style: none;
        top: 0px;
        left: -40px;
        right: 0px;
        position:relative;
      }
      ul :hover {
          
        cursor: pointer;
        background-color:#EEEEEE
      }
      li {
          
        list-style: none;
        top: 0px;
        left: 0px;
        right: 0px;
      }
    </style>

说明：

get方法实现获取下拉数据和搜索功能，输入keyword之后，调用get方法使用jsonp获取提示数据，然后赋值给myData，然后使用v-for遍历提示数据

然后selectDown和selectUp实现上下选中数据，当按下回车键时，实现搜索

本文参考链接：

[http://www.uxys.com/html/Vue/20170621/23154.html][http_www.uxys.com_html_Vue_20170621_23154.html]

[https://segmentfault.com/q/1010000009471910/a-1020000009474506][https_segmentfault.com_q_1010000009471910_a-1020000009474506]

[0f0c1a9235a44d4a8ba7d21bfff6ecd9.gif]: /images/20221022/e61ff9c190a745f283f69bfbf738a96f.png
[http_www.uxys.com_html_Vue_20170621_23154.html]: http://www.uxys.com/html/Vue/20170621/23154.html
[https_segmentfault.com_q_1010000009471910_a-1020000009474506]: https://segmentfault.com/q/1010000009471910/a-1020000009474506