OnlineTraining0622/pages/demandCourses/demandCourses.wxml

<view class="container">
	<view class="class_box" wx:for="{{lbArr}}" wx:for-index="idx" wx:for-item="item" wx:key="index">
		<view bindtap="goIn" data-item="{{item}}">
			<image src="{{item.courseImg}}" mode='aspectFill' class="scimg"></image>
			<view class="sctext">
				<view class="t1">{{item.courseName}}</view>
				<view class="t3">时长：{{sfmArr[idx].courseTime}}</view>
				<view class="t2">{{item.playTimes}}人看过</view>
			</view>
		</view>
	</view>
	<view wx:if="{{showNull}}">
		<image src='/images/nodata.png' mode='aspectFill' class="nodata"></image>
		<view class="nodata_text">暂无数据</view>
	</view>
</view>