本文实例为大家分享了小程序实现下拉列表框菜单的具体代码，供大家参考，具体内容如下
<view class='top'>
<view class='top-text'> 选择班别</view>
<!-- 下拉框 -->
<view class='top-selected' bindtap='bindShowMsg'>
<text>{{grade_name}}</text>
<image src='/images/xia.png'></image>
</view>
<!-- 下拉需要显示的列表 -->
<view class="select_box" wx:if="{{select}}">
<view wx:for="{{grades}}" wx:key="unique">
<view class="select_one" bindtap="mySelect" data-name="{{item}}">{{item}}</view>
</view>
</view>
</view>
.top {
width: 100vw;
height: 80rpx;
padding: 0 20rpx;
line-height: 80rpx;
font-size: 34rpx;
border-bottom: 1px solid #000;
}
.top-text {
float: left;
}
.top-selected {
width: 50%;
display: flex;
float: right;
align-items: center;
justify-content: space-between;
border: 1px solid #ccc;
padding: 0 10rpx;
font-size: 30rpx;
}
.select_box {
background-color: #fff;
padding: 0 20rpx;
width: 50%;
float: right;
position: relative;
right: 0;
z-index: 1;
overflow: hidden;
text-align: left;
animation: myfirst 0.5s;
font-size: 30rpx;
}
.select_one {
padding-left: 20rpx;
width: 100%;
height: 60rpx;
position: relative;
line-height: 60rpx;
border-bottom: 1px solid #ccc;
}
@keyframes myfirst {
from {
height: 0rpx;
}
to {
height: 210rpx;
}
}
.top-selected image {
height: 50rpx;
width: 50rpx;
position: absolute;
right: 0rpx;
top: 20rpx;
}// pages/zy/zy.js
Page({
data: {
select: false,
grade_name: '--请选择--',
grades: ['1班', '2班', '3班', ]
},
bindShowMsg() {
this.setData({
select: !this.data.select
})
},
mySelect(e) {
console.log(e)
var name = e.currentTarget.dataset.name
this.setData({
grade_name: name,
select: false
})
},
onLoad: function(options) {
},
onReady: function() {
},
onShow: function() {
},
onHide: function() {
},
onUnload: function() {
},
onPullDownRefresh: function() {
},
onReachBottom: function() {
},
onShareAppMessage: function() {
}
})
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程网。
