今天写了第一个JQuery程序，发现就跑步起来，很奇怪，查看后也正确的引入了JQuery包，不知道是为什么，最后终于发现问题，奇怪的很。

错误的代码：

1: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 2: "http://www.w3.org/TR/html4/loose.dtd"> 3: <html> 4: <head> 5: <title>My First JQuery example</title> 6: <script language="JavaScript" type="text/javascript" src="lib/jquery-1.6.3.js"/> 1:  2: <script> 3: $(document).ready(function(){ 4: alert("Welcome to come JQuery World!"); 5: }); 6: </script> 7: </head> 8: <body> 9: <h1>This is the first JQuery example!</h1> 10: </body> 11: </html>
.csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; 100%; margin: 0em; } .csharpcode .lnum { color: #606060; }

 

上述代码中第六行是错误的，script必须成对的出现。

<script language="JavaScript" type="text/javascript" src="lib/jquery-1.6.3.js"></script>

这样才是正确的。