For example, you can take a look at the jquery implementation

$("#a").click(callback);

$(document).on('click','#a',function(){ //TODO });

$("#a").live();//过时

$(document).on('click','#a',function(){ //TODO }); Borrowing the answer from the first floor, I think you can find its parent element first and then bind it

I have encountered this before. Using onclick on dynamically loaded DOM does not work, because it only works on the existing DOM. Use $(document).on('click','#a',function(){} ) will work, you can try it.

You can use event delegation to achieve this, for example

If you want to add a list (.list) in the wrapper, you can write the delegate like this (simple writing):

//获取目标节点(这里只支持class获取) //ele: 起始元素，最内侧的元素 //selector： className, //stopTrget: 委托容器元素 function getTargetNode(ele,selector,stopTarget){ var clsReg = new RegExp(selector), className = ele.className; if(ele === stopTarget) return null; if(clsReg.test(className)){ return ele; } else { return getTargetNode(ele.parentNode,selector); } }; //委托 function addEvent(event,ele,selector){ ele["on"+event] = function(e){ e = e || event; var target = e.target || e.srcElement; //当满足触发条件时 if(getTargetNode(target,selector,ele)){ //The deep♂dark♂fantasy } }; } addEvent("click",document.querySelecor('.wrapper'),'.list');

You can use JQ’s on method and delegate method. If it’s native, use event delegation