微信小程序实现弹出菜单功能

需求

点击标签栏按钮，向下弹出菜单，再次点击，收回菜单

要解决的问题

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

如何解决？

1. 弹性布局，横向，三者平分整栏;
2. 状态监听点击事件，数据控制hide或者show,通过rgba设置透明度
3. 弹出框设置z-index；
4. 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;
}

具体实现

wxml

<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}`,
  })
 }
})

总结

以上所述是小编给大家介绍的微信小程序实现弹出菜单功能，希望对大家有所帮助