[图片] <video wx:if="{{item1.video}}" class="m-video" ad-unit-id poster-for-crawler  poster="{{item1.img}}" src="{{item1.video}}">       </video> //加上custom-cache=”{{false}}”与autoplay="{{false}}"都不行，但是加上wx:if="{{item1.video}}" 就完美解决