Regex: find whatever comes after one thing before another thing

Question

I want to find anything that comes after s= and before & or the end of the string. For example, if the string is

t=qwert

Answer 1

Why don't you try something that was generically aimed at parsing query strings? That way, you can assume you won't run into the obvious next hurdle while reinventing the wheel.

jQuery has the query object for that (see JavaScript query string)

Or you can google a bit:

function getQuerystring(key, default_)
{
   if (default_==null) default_=""; 
   key = key.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
   var regex = new RegExp("[\\?&]"+key+"=([^&#]*)");
   var qs = regex.exec(window.location.href);
   if(qs == null)
     return default_;
   else
     return qs[1];
}

looks useful; for example with

http://www.bloggingdeveloper.com?author=bloggingdeveloper

you want to get the "author" querystring's value:

var author_value = getQuerystring('author');