<!DOCTYPE html><html lang="en"><head> ???<meta charset="UTF-8"> ???<title>Title</title> ???<script src="jquery-3.2.1.js"></script> ???<style> ???????#div1{ ???????????height: 400px; ???????????width: 600px ???????????background-color: #7b7b7b; ???????????opacity: 1; ???????} ???</style></head><body> ???<div id="div1"></div> ???<script> ???????(function ($) { ???????????$.fn.extend({ ???????????????hello:function () { ????????????????????setTimeout("$(\"#div1\").css(\"background-color\",\"red\");",2000); ????????????????????setTimeout("$(\"#div1\").css(\"background-color\",\"black\");",4000); ????????????????????setTimeout("$(\"#div1\").css(\"background-color\",\"gold\");",6000); ???????????????} ???????????}) ???????})(jQuery); ???????$("#div1").hello() ???</script></body></html>jQuery 自定义方法(扩展方法)
原文地址：http://www.cnblogs.com/laoguiaabb/p/8085259.html