所属分类：php教程
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：
程序员必备接口测试调试工具：立即使用
Apipost = Postman + Swagger + Mock + Jmeter
Api设计、调试、文档、自动化测试工具
后端、前端、测试，同时在线协作，内容实时同步
代码如下：
.wxml文件
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{{item.cont}}
{{item.discount}}
{{items.price}} {{items.oldPrice}} {{items.validType}} {{items.validTime}}
购买
登录后复制.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
}登录后复制.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;
},登录后复制相关推荐：
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