本篇文章给大家带来的内容是关于小程序实例：小程序实现折叠菜单的效果（附代码），有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。
通常，菜单都有一级菜单二级、三级菜单之分，我们知道前端js的dom操作可以很好的控制二级菜单的显示与隐藏，当然今天我就不介绍web端的菜单折叠效果。我今天呢，是来学习学习小程序中该如何实现点击一级菜单显示/隐藏二级菜单，并且在点击一个菜单显示之外，要实现其他菜单隐藏。
实现效果如下：
代码如下：
   .wxml文件
<view class="cells"> <view class="item" wx:for="{{list}}" wx:for-index="idx" wx:for-item="item" wx:key="idx"> <view bindtap="isopen" class="cdn" data-index="{{item.id}}"> <view> <image class="img" src="{{item.iamges}}" mode="aspectfill"/><text class="content">{{item.cont}}</text> </view> <view> <text class="discount">{{item.discount}}</text><image class="icon_img" src="{{item.hidden ? '/assets/icon_down2x.png' : '/assets/icon_up2x.png'}}" mode="aspectfill"/> </view> </view> <view hidden="{{item.hiddena}}" class="hidden"> <block wx:for="{{item.invalidactivty}}" wx:for-index="index" wx:for-item="items" wx:key="index"> <view class="buys"> <view class="v1 "> <navigator><text class="new-price">{{items.price}}</text><text class="oldprice">{{items.oldprice}}</text></navigator> <navigator><text class="buy">{{items.validtype}}</text><text style="font-size: 24rpx;margin-left: 20rpx;color: #6c6c6c">{{items.validtime}}</text></navigator> </view> <view class="shopping"> <text>购买</text> </view> </view> </block> </view> </view></view>
.wxss文件如下：
page{ background: #fff;}.swiper-img{ width: 750rpx; height: 300rpx;}.cells .item .cdn{ position: relative; box-sizing:border-box; display: flex; justify-content: space-between; align-items: center; padding: 20rpx 30rpx; /*border-bottom: 1rpx solid #f0f0f0;*/ background-color: #fff; font-size: 32rpx;}.cells .item .cdn::after{ content:'';position:absolute;top:0;left:0;width:200%;height:200%;-webkit-transform:scale(.5);transform:scale(.5);-webkit-transform-origin:0 0;transform-origin:0 0;pointer-events:none;box-sizing:border-box;border-bottom:0 solid #f0f0f0;border-width:1px}.img{ height: 44rpx; width: 44rpx; vertical-align: middle; display: inline-block; line-height: 82rpx;}.icon_img{ height:12rpx; width:20rpx;}.content{ margin-left: 15rpx; line-height: 82rpx; vertical-align: middle;}.discount{ line-height: 82rpx; vertical-align: middle; color:orange; box-sizing: border-box; padding-right: 20rpx;}.video-item{ display: flex; flex-direction: column;}.buys{ width:750rpx; height: 141.6rpx; position: relative; box-sizing: border-box; padding: 20rpx 30rpx; display: flex; flex-direction: row; justify-content: space-between; align-items: center; background-color:#fafafa;}.buys::after { content:'';position:absolute;top:0;left:0;width:200%;height:200%;-webkit-transform:scale(.5);transform:scale(.5);-webkit-transform-origin:0 0;transform-origin:0 0;pointer-events:none;box-sizing:border-box; border-bottom:0 solid #dcdcdc;border-width:1px;}.v1{ width: 35%; display: flex; flex-direction: row; flex-wrap: wrap;}.new-price{ font-size: 32rpx; color: #3b3b3b;}.oldprice{ text-decoration:line-through; font-size: 24rpx; color: #b0b0b0; margin-left: 20rpx;}.buy{ font-size: 24rpx; color: #2daf73; text-align: center; width: 80rpx; height: 40rpx; line-height: 40rpx; display: inline-block; position: relative; box-sizing: border-box;}.buy::after{ content:'';position:absolute;top:0;left:0;width:200%;height:200%;-webkit-transform:scale(.5);transform:scale(.5);-webkit-transform-origin:0 0;transform-origin:0 0;pointer-events:none;box-sizing:border-box;border:0 solid #2daf73;border-width:1px;border-radius:8rpx}.shopping{ width: 128rpx; height: 56rpx; line-height: 56rpx; position: relative; box-sizing: border-box; font-size: 28rpx; color: #2daf73; text-align: center;}.shopping::after{ content:'';position:absolute;top:0;left:0;width:200%;height:200%;-webkit-transform:scale(.5);transform:scale(.5);-webkit-transform-origin:0 0;transform-origin:0 0;pointer-events:none;box-sizing:border-box;border:0 solid #2daf73;border-width:1px;border-radius:16rpx}
.js文件
data: { memberlist:[ {iamges:"/assets/logo_aiqiyi2x.png", cont:"爱奇艺影视会员", discount:"7.5折", hiddena:true, id:"0", invalidactivty:[ { price:"2.98元", oldprice:"3元", validtype:"周卡", validtime:'7天有效' }, { price:"18.98元", oldprice:"25元", validtype:"月卡", validtime:'30天有效' }, ] }, {iamges:"/assets/logo_tengxun2x.png", cont:"腾讯视频会员", discount:"7折", hiddena:true, id:"1", invalidactivty:[ { price:"2.98元", oldprice:"3元", validtype:"周卡", validtime:'7天有效' }, { price:"18.98元", oldprice:"25元", validtype:"月卡", validtime:'30天有效' }, ] }, {iamges:"/assets/logo_youku2x.png", cont:"优酷视频黄金会员", discount:"8折", hiddena:true, id:"2", invalidactivty:[ { price:"2.98元", oldprice:"3元", validtype:"周卡", validtime:'7天有效' }, { price:"18.98元", oldprice:"25元", validtype:"月卡", validtime:'30天有效' }, ] }, {iamges:"/assets/logo_sohu2x.png", cont:"搜狐视频黄金会员", discount:"8折", hiddena:true, id:"3", invalidactivty:[ { price:"2.98元", oldprice:"3元", validtype:"周卡", validtime:'7天有效' }, { price:"18.98元", oldprice:"25元", validtype:"月卡", validtime:'30天有效' }, ] }, ] }, isopen:function(e){ var that = this; var idx = e.currenttarget.dataset.index; console.log(idx); var memberlist = that.data.memberlist; console.log(memberlist); for (let i=0; i < memberlist.length; i++){ if (idx == i) { memberlist[i].hidden=!memberlist[i].hidden; } else { memberlist[i].hidden=true; } } this.setdata({memberlist:memberlist}); return true; },
相关推荐：
小程序的开发：表单的验证(代码)
小程序：实现点击倒计时的代码
以上就是小程序实例：小程序实现折叠菜单的效果（附代码）的详细内容。