****点击子ID节点，触发父ID节点****
mui("body").on('tap','#zs-b-1',function(e){
this.parentElement.classList.toggle("zs-b-1");
})
****点击子ID节点，触发父ID节点****
mui("body").on('tap','#zs-b-1',function(e){
this.parentElement.classList.toggle("zs-b-1");
})
![css伪类与伪元素区别[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)