Finding Url Parameters using Javascript

Sometimes you want to get the parameters of a url ? In jsp, you can use something like

var name='<%=request.getParameter("name") %>';

if(name==='null'){
    name='';
}

Now I found a much better way using Javascript at this web site . The code is below for reference.

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

The website also has other articles with regards to web programming and javascript.