How to extract special URL address from given text in JQuery1?

E.g:

The given text with special URL which I want:

17.http://www.kt8.com.cn/images/skin/small/url.gifhttp://u.115.com/file/t1678开发者_运维百科5f328# XTM.DVD-HALFCD2.Touch.1985.EP017.mkv

18.http://www.kt8.com.cn/images/skin/small/url.gifhttp://u.115.com/file/t1c64a6022# XTM.DVD-HALFCD2.Touch.1985.EP018.mkv

19.http://www.kt8.com.cn/images/skin/small/url.gifhttp://u.115.com/file/t1c1a4047b#

And I want to extract the URL:

http://u.115.com/file/t16785f328#

And these kind of URL address pattern is:

http://u.115.com/file/[fileParameterHere]#

So,I need a way to find out the URL address I want.

Any suggestions will be great.

Thank you very much!

Regex is probably the best way:

var r = new RegExp("^http://u.115.com/file/([^#]+)#");
var x = null;
if(x = r.exec("http://u.115.com/file/t16785f328#")){
   // do something with x
   // x[1] contains "t16785f328"
}