Query string in Javascript

The function that can be called out for processing queries:




  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];


   }

The url to that page on which you are using the querys tring function should be like this

http://example.com ? id=hjidsyf3425392

to retrive the Id from query string here i am using it on page load event


  window.onload=show;



   function show()

   {

    var id =getQuerystring('id');

   }

Thats it enjoy!!!!!