Posted By

nelsnelson on 03/18/09

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Last Edited at 03/18/09 02:46pm

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Javascript function to get URL query string parameters

/ Published in: JavaScript

Here is a small function [[lobo235](http://www.netlobo.com/javascript_tooltips.html "Javascript Tool-tips")] wrote that will parse the window.location.href value and return the value for the parameter you specify. It does this using javascript's built in regular expressions.

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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];
}