这篇文章主要介绍了jquery 回调函数（callback）的使用和基础,需要的朋友可以参考下
还是先贴代码吧
<!doctype html><html> <head> <meta charset="utf-8"> <title></title> <script src="js/jquery.js"></script> </head><style>body{font-family: "微软雅黑";width: 980px; margin: 0 auto; text-align: center;} .box{ width: 300px; height: 300px; background: green; border: 1px solid #e6e6e6; margintop: 50px; line-height: 200px; position: absolute; }button{ border: none; background: green; width: 100px; height: 50px; line-height: 50px; color: #fff; font-size: 16px; margin-top: 50px; }</style> <body> <button>点击开始动画</button> <p class="box" ></p> <script> $(document).ready(function(){ $("button").click(function(){ var p=$(".box"); p.animate({height:'200px',opacity:'0.4'},"slow"); p.animate({width:'200px',opacity:'0.8'},"slow"); p.animate({height:'100px',opacity:'0.4'},"slow"); p.animate({width:'100px',opacity:'0.8'},"slow"); p.animate({right:'100px',opacity:'0.8'},"slow"); p.animate({bottom:'100px',opacity:'0.8'},"slow"); p.animate({left:'100px',opacity:'0.8'},"slow"); p.animate({top:'100px',opacity:'0.8'},"slow",function(){ alert("the paragraph is over"); }); }); }); </script> <script> $(document).ready(function(){ $("button").click(function(){ var p=$(".box"); p.animate({height:'300px',opacity:'0.4'},"slow"); p.animate({width:'300px',opacity:'0.8'},"slow"); p.animate({height:'100px',opacity:'0.4'},"slow"); p.animate({width:'100px',opacity:'0.8'},"slow",function(){ alert("the paragraph is over"); }); }); }); }); </script> </body></html>
所谓的回调函数，其实就是在 speed 或 duration 参数可以设置许多不同的值，比如 slow, fast, normal 或毫秒 后面再添加函数，显示相对应的内容，以提示网民。
以上就是本章的全部内容，更多相关教程请访问jquery视频教程！