GET PHP on Javascript

getJavascript.js

/**
 *  var name = $_GET('name');
 *  OR
 *  var $_GET = $_GET(), name = $_GET['name']
 */
function $_GET(param) {
	var vars = {};
	window.location.href.replace( location.hash, '' ).replace(
		/[?&]+([^=&]+)=?([^&]*)?/gi, // regexp
		function( m, key, value ) { // callback
			vars[key] = value !== undefined ? value : '';
		}
	);
	if (param) {
		return vars[param] ? vars[param] : null;
	}
	return vars;
}