摘要：
1 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> 2 <script type="text/javascript"> 3 (function(){ 4 var a = 2, 5 srcPath; 6 if(a == 1){ 7 srcPath = 'http://jquery.com/files/social/js/j 阅读全文