<view class="container"><image class="backImg" src="{{backImg}}" data-event-opts="{{[['longtap',[['bc_code',['$event']]]]]}}" bindlongtap="__e"></image><view class="tki-qrcode"><canvas canvas-id="qrcode" data-event-opts="{{[['longtap',[['bc_code',['$event']]]]]}}" bindlongtap="__e"></canvas></view></view>