How to achieve drop-down box effect in WeChat applet? (code example)

The content of this article is to introduce how to implement the drop-down box effect in the WeChat applet? (code example). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

There is no drop-down box in the WeChat applet component, just use it. Write it down for reference later

wxml code:

  选择接收班级   {{grade_name}}      {{item}}   

wxss Code:

/* 顶部 */.top{ width: 100vw; height: 80rpx; padding: 0 20rpx; line-height: 80rpx; font-size: 34rpx; border-bottom: 1px solid #000; }.top-text{ float: left}/* 下拉框 */.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; }/* 下拉内容 */.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; }/* 下拉过度效果 */@keyframes myfirst { from { height: 0rpx; } to { height: 210rpx; }}/* 下拉图标 */.top-selected image{ height:50rpx; width:50rpx; position: absolute; right: 0rpx; top: 20rpx; }

js code:

/** * 页面的初始数据 */ data: { select:false, grade_name:'--请选择--', grades: [ '猛犸机器人1班', '猛犸机器人2班', '口才1班', ] },/** * 点击下拉框 */ bindShowMsg() { this.setData({ select: !this.data.select }) },/** * 已选下拉框 */ mySelect(e) { console.log(e) var name = e.currentTarget.dataset.name this.setData({ grade_name: name, select: false }) },

Effect display:

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