微信小程序完成弹出菜单技巧

微信小程序，简称小程序，英文名Mini Program，是一种不需要下载安装即可使用的应用，它实现了应用“触手可及”的梦想，用户扫一扫或搜一下即可打开应用。小程序是一种不用下载就能使用的应用，也是一项门槛非常高的创新，经过将近两年的发展，已经构造了新的小程序开发环境和开发者生态。

最近做项目需要这样的需求，当用户点击标签栏按钮，向下弹出菜单，再次点击，收回菜单。接下来通过本文给大家介绍微信小程序实现弹出菜单功能，感兴趣的朋友一起看看吧

需求

点击标签栏按钮，向下弹出菜单，再次点击，收回菜单

微信小程序实现弹出菜单功能

要解决的问题

标签栏三栏样式，标签栏固定不动；
点击标签栏弹出菜单，并且出现透明遮罩；
遮罩优先级在弹出框之下；
弹出框内标签的设置；
滚动栏滚动条的隐藏

如何解决？

弹性布局，横向，三者平分整栏;
状态监听点击事件，数据控制hide或者show,通过rgba设置透明度
弹出框设置z-index；
弹性布局flex 横向排列超出后wrap 然后space-around控制间距

::-webkit-scrollbar {
width: 0;
height: 0;
color: transparent;
}

<import src="../../templates/template" /> <view class="container {{isMask?'mask':''}}"> <view class="header"> <view class="filterCity {{status=='1' && isActive?'active':''}}" data-status='1' bindtap="changeStatus"> <view class="city">城市筛选</view> <image src="{{status=='1' && isActive?'../../youzan-image/red-up.png':'../../youzan-image/down.png'}}" /> </view> <view class="filterJob {{status=='2' && isActive?'active':''}}" data-status='2' bindtap="changeStatus"> <view class="job">职位筛选</view> <image src="{{status=='2' && isActive?'../../youzan-image/red-up.png':'../../youzan-image/down.png'}}" /> </view> <view class="filterOrder {{status=='3'&& isActive?'active':''}}" data-status='3' bindtap="changeStatus"> <view class="order">排序方式</view> <image src="{{status=='3' && isActive?'../../youzan-image/red-up.png':'../../youzan-image/down.png'}}" /> </view> </view> <block wx:if="{{isActive==true&&status=='1'}}"> <view class="cityContainer"> <block wx:for="{{city}}" wx:key="id" wx:for-index="index"> <view class="city {{isSelect&&index==curIndex?'select':''}}" data-index="{{index}}" bindtap="select">{{item}}</view> </block> </view> </block> <block wx:if="{{isActive==true&&status=='2'}}"> <scroll-view scroll-y="true" class="posContainer"> <block wx:for="{{cur}}" data-index='index' wx:for-index='index' wx:key="index"> <view class="title">{{item.title}}</view> <view class="poscontent"> <view wx:for="{{item.types}}" wx:for-item="type" wx:key='id' wx:for-index="{{index}}" data-index="{{index}}"> <view class="tag {{isSelect&&index==curIndex?'select':''}}" data-id="{{id}}" bindtap="multiSelect">{{type}}</view> </view> </view> </block> <view class="confirm"> <button class="weui-btn" type="warn">确认</button> </view> </scroll-view> </block> <block wx:if="{{isActive==true&&status=='3'}}"> <view class="orderContainer"> <view class="block">智能排序</view> <view class="block">时间排序</view> <view class="block">薪资排序</view> </view> </block> <view class="listContainer" > <view wx:for="{{jobList}}" wx:key="index" data-index="{{index}}"> <template is="list-item" data="{{...item}}" /> </view> </view> <view class="search " bindtap="search"> <image src="../../youzan-image/search.png" /> <text>搜索</text> </view> </view>

wxss

page {
  position: relative;
  width: 100%;
  height: 100vh;
}

.header {
  width: 100%;
  height: 80rpx;
  position: fixed;
  top: 0;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  text-align: center;
  color: #313131;
  font-size: 16px;
  border-bottom: 1rpx solid #eeeeee;
  z-index: 9999;
  background-color: #fff;
}

.filterCity {
  flex: 1;
  position: relative;
  height: 80rpx;
  line-height: 80rpx;
}

.filterJob {
  position: relative;
  flex: 1;
  height: 80rpx;
  line-height: 80rpx;
}

.filterOrder {
  position: relative;
  flex: 1;
  height: 80rpx;
  line-height: 80rpx;
}

.header image {
  position: absolute;
  right: 15rpx;
  top: 26rpx;
  width: 30rpx;
  height: 30rpx;
}

.active {
  color: #ef0001;
}

.mask {
  width: 100%;
  height: 100%;
  position: fixed;
  top: 80rpx;
  background-color: rgba(15, 15, 26, 0.3);
}

.cityContainer {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: space-between;
  flex-wrap: wrap;
  width: 100%;
  height: 300rpx;
  z-index: 999;
  background-color: #fff;
  border-bottom: 1rpx solid #e9e9e9;
  padding-bottom: 130rpx;
}

.cityContainer .city {
  display: block;
  font-size: 15px;
  margin-top: 100rpx;
  width: 150rpx;
  height: 50rpx;
  line-height: 50rpx;
  text-align: center;
  border: 1rpx solid #e9e9e9;
  overflow: hidden;
}
.select {
  color: #ffffff;
  background-color: #ed0000;
}
.posContainer {
  height: 980rpx;
  width: 100%;
  background-color: #fff;
  /* overflow:auto; */
}
::-webkit-scrollbar {
  width: 0;
  height: 0;
  color: transparent;
}
.title {
  margin-top: 55rpx;
  font-size: 15px;
  margin-left: 28rpx;
}
.poscontent {
  width: 100%;
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  flex-wrap: wrap;
  margin-top: -15rpx;
}
.tag {
  margin-left: 28rpx;
  margin-top: 23rpx;
  font-size: 13px;
  width: 150rpx;
  height: 50rpx;
  line-height: 50rpx;
  text-align: center;
  border: 1rpx solid #e9e9e9;
}
.confirm {
  width: 100%;
  height: 150rpx;
  border: 1rpx solid transparent;
  background-color: #fff;
}
.weui-btn {
  position: fixed;
  width: 95%;
  bottom: 52rpx;
  left: 50%;
  transform: translateX(-50%);
}
.orderContainer {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: center;
  background-color: #fff;
  width: 100%;
  height: 125rpx;
}
.block {
  font-size: 13px;
  width: 200rpx;
  height: 50rpx;
  line-height: 50rpx;
  text-align: center;
  border: 1rpx solid #e9e9e9;
}
.search {
  position: fixed;
  bottom: 80rpx;
  background-color: #fff;
  right: 25rpx;
  width: 150rpx;
  height: 75rpx;
  line-height: 75rpx;
  text-align: center;
  border-radius: 35rpx;
  box-shadow: 1rpx 1rpx 7rpx 7rpx #f5f5f5;
}
.search image {
  width: 30rpx;
  height: 30rpx;
}
.search text {
  font-size: 15px;
  padding-left: 9rpx;
  color: #666666;
}
.listContainer {
  width: 100%;
  height: 100%;
  margin-top: 80rpx;
}
js
import category from '../../api/employ'
import jobList from '../../api/detail'
Page({
 data: {
  curIndex: '',
  isActive: false,
  jobList:[],
  cur: [],
  job: [],
  isShow: true,
  status: 0,
  isMask: false,
  isSelect: false,
  city: ['全国', '杭州', '北京', '深圳', '上海', '广州', '武汉', '重庆']
 },
 changeStatus(e) {
  let status = e.currentTarget.dataset.status;
  let cur = category;
  this.setData({
   isActive: !this.data.isActive,
   status: status,
   isMask: !this.data.isMask,
   cur: cur,
  })
 },
 select(e) {
  let curIndex = e.currentTarget.dataset.index;
  this.setData({
   isSelect: " curIndex == this.data.curIndex ? '!this.data.isActive' : 'true' ",
   isActive: false,
   isMask:false,
   curIndex: curIndex,
  })
 },
 multiSelect(e){
  let multiIndex=e.currentTarget.dataset.index;
  this.setData({
   isSelect:!this.data.isSelect,
   curIndex:multiIndex
  })
 },
 search(e) {
  wx.navigateTo({
   url: '../search/search',
  })
 },
 onLoad: function (e) {
  this.setData({
   jobList:jobList
  })
 },
 click:function (e) {
  let id =e.currentTarget.dataset.id;
  wx.navigateTo({
   url: `../detail/detail?id=${id}`,
  })
 }
})
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小程序是一种不需要下载安装即可使用的应用，它实现了应用“触手可及”的梦想，用户扫一扫或者搜一下即可打开应用。



  关键词：微信小程序完成弹出菜单技巧