jianbing/unpackage/dist/dev/mp-weixin/components/mescroll-uni/components/mescroll-top.wxml

<block wx:if="{{mOption.src}}"><image class="{{['mescroll-totop',value?'mescroll-totop-in':'mescroll-totop-out',[(mOption.safearea)?'mescroll-totop-safearea':'']]}}" style="{{'z-index:'+(mOption.zIndex)+';'+('left:'+(left)+';')+('right:'+(right)+';')+('bottom:'+($root.m0)+';')+('width:'+($root.m1)+';')+('border-radius:'+($root.m2)+';')}}" src="{{mOption.src}}" mode="widthFix" data-event-opts="{{[['tap',[['toTopClick',['$event']]]]]}}" bindtap="__e"></image></block>