vue 实现百度下拉提示搜索功能

一、概述

使用百度实现搜索功能，先来看一下效果图

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>