当使用.on委托(delegate)事件时，我如何定位子元素:我试过:childSelector=>*>:nth-child(n)但是当我从>开始时没有选择任何东西。$(selector).on(event,childSelector,handler);有时我想针对直接child，有时我不想:(伪代码)varfunc=function(selector,subSelector){$(selector).on("click",subSelector,function(){alert("mysubSelectorisclicked");});}func("#wrapper","direct