uniapp 仿微信的右边下拉选择弹出框的实现代码

<template>
//这里是搜索框的输入框 不需要的可以删掉
 <view>
 <view class="arrivalSearch">
  <view class="arrivalSmallsearch">
   <view class="arrivalSearchInput">
   <input type="text" :placeholder="dateinit">
   </view>
   //这里是输入框旁边的图标（这里的图标是一张图片）
   <image src="../../static/img/nav.png" mode="aspectFill" @click.stop="ShowHidden = !ShowHidden"> </image>
  </view>
 </view>
 //这里是弹出来的下拉筛选框
 <view class="arrivalNavigation" v-if="ShowHidden">
  <view class="d4"></view>
  <view class="sideNavigation">
  <nav>
  <ul>
   <navigator url="../arrivalQuery/arrivalQuery">
   <li>到货查询</li>
   </navigator>
   <view class="liBottomBorder"></view>
  <navigator url="../retailStore/retailStore"><li>门店查询</li></navigator>
   <view class="liBottomBorder"></view>
   <navigator url="../itemNoQuery/itemNoQuery"><li>货号查询</li></navigator>
   <view class="liBottomBorder"></view>
   <navigator url="../priceReductionQuery/priceReductionQuery"><li>降价查询</li></navigator>
  </ul>
  </nav>
  </view>
 </view>
 </view>
</template>

<script>
 export default {
  data() {
  return {
   ShowHidden: false,
   dateinit:'请输入货号',
  };
  },
  methods: {
   // 点击页面事件 隐藏需要隐藏的区域
   HiddenClick () {
    this.ShowHidden = false
   },
  },
  mounted () {
    // document.addEventListener('click', this.HiddenClick)
   },
 }
</script>

<style lang="less">
 .arrivalSearch{
  width: 100%;
  height: 100rpx;
  background-color: #fff;
  box-shadow: 0 0 10rpx #eee;
 .arrivalSmallsearch{
  width: 96%;
  display: flex;
  .arrivalSearchInput{
    height: 70rpx;
    background-color: #F0F1F6;
    border-radius: 40rpx;
    font-size: 25rpx;
    margin-left: 10rpx;
    margin-top: 10rpx;
    width: 608rpx;
  }
  input{
  width: 80%;
    margin-left: 40rpx;
  margin-top: 10rpx;
  }
  image{
  width: 40rpx;
  height: 40rpx;
  margin-left: 20rpx;
  margin-top: 20rpx;
  }
 }
 
 }
 //从这里开始是弹出框的样式 不需要搜索框的 前面样式都不用加
 .arrivalNavigation{
  width: 250rpx;
  position: absolute;
   right:20rpx;
  z-index: 99;
  .sideNavigation{
   width: 248rpx;
   background-color: #202020;
   color: #eee;
   border-radius: 10rpx;
    li{
    height: 85rpx;
    text-align: center;
    line-height: 85rpx;
    font-size: 25rpx;
    }
    .liBottomBorder{
   border: 0.1rpx solid #373737;
    }
   
   }
   .d4{
   // position: absolute;
   //  left: 140rpx;
    width: 0; 
    height: 0;
   margin-left: 150rpx;
   margin-top: -20rpx;
    border-width:20rpx;
    border-style: solid;
    border-color: transparent #333 transparent transparent;
    transform: rotate(90deg); /*顺时针旋转90°*/
   
   }
  }
</style>

import springBox from 'pages/springBox/springBox'
Vue.component('springBox',springBox)

<springBox></springBox>