Analyze JavaScript event delegated instances and analyze javascript instances

Analyze JavaScript event delegated instances and analyze javascript instances

This example describes how to use JavaScript event delegation. Share it with you for your reference. The details are as follows:

Var addEvent = function (elem, eventType, func) {if (elem. addEventListener) addEvent = function (elem, eventType, func) {elem. addEventListener (eventType, func, false) ;}; else if (elem. attachEvent) addEvent = function (elem, eventType, func) {elem. attachEvent ('on' + eventType, func) ;}; addEvent (elem, eventType, func) ;}; var delegateEvent = function (elem, childElems, eventType, func, args) {addEvent (elem, eventType, function (e) {var evt = e | window. event; var elem = evt.tar get | evt. srcElement; if (elem. nodeName. toLowerCase () = childElems. toLowerCase () {func (elem, args );}});};

I hope this article will help you design javascript programs.