效果图
这里我是控制只显示2个数组
1.wxml
在{{!showMore? ‘hiddenmore’ : ‘showmore’}}中，如果showMore为false,则hiddenmore下的more-item列表都不显示
// WXML<view class="wrong-rate"><view class="wr-title">本班错题知识点汇总</view><view class="{{!showMore? 'hiddenmore' : 'showmore'}}"><view wx:for="{{rankList}}" wx:for-item="item" wx:for-index="idx" wx:key="" class="wr-list {{idx>1 ? 'more-item' : ''}}"><view>知识点1错误率({{item.percentage0}}%),共{{item.amount}}人</view><view>其中:概念题错误率({{item.percentage1}}%)</view><view>其中:基础题错误率({{item.percentage2}}%)</view><view>其中:综合题错误率({{item.percentage3}}%)</view></view></view><block wx:if="{{rankList.length>2}}"><view wx:if="{{showMore}}" class='' bindtap='listToggle'><image style='width:38rpx;height:31rpx;transform:rotate(180deg);' src="/static/images/down1.png"></image></view><view wx:else class='' bindtap='listToggle'><image style='width:38rpx;height:31rpx;' src="/static/images/down1.png"></image></view></block></view>
2.WXSS
// WXSS.wrong-rate {text-align: center;}.wr-title {margin-bottom: 20rpx;}.wr-list {font-size: 30rpx;line-height: 50rpx;margin-bottom: 20rpx;}.hiddenmore .more-item {display: none;}
3.JS
通过点击事件重置showMore的值传递到视图层
// JSdata{showMore: false,rankList: [{amount:9.37,percentage0:30,percentage1: 30,percentage2: 30,percentage3: 30},{amount: 9.38,percentage0: 10,percentage1: 10,percentage2: 10,percentage3: 10},{amount: 9.39,percentage0: 20,percentage1: 20,percentage2: 30,percentage3: 30},],//这里面的数据是我写死的数据，应该要通过请求获取的 },listToggle: function () {this.setData({showMore: !this.data.showMore})},
