PHP Tricks provide a function which helps to get URL parameters using JavaScript. This is very easy function to quick edit.
function getURLVariable(variable) { var query = window.location.search.substring(1); var vars = query.split("&"); for (var i=0;i<vars.length;i++) { var pair = vars[i].split("="); if(pair[0] == variable){return pair[1];} } return(false); }
Usage
Example URL:
http://www.demosite.com/index.php?mid=10&image_name=test.jpg
Calling getURLVariable("mid") – would return “10“.
Calling getURLVariable("image_name") – would return “test.jpg“.

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