__FILE__ and __DIR__ in JavaScript

scriptpath.js

/**
 * __DIR__ & __FILE__ for JavaScript (was tested in IE 7-10)
 * This definition must be inserted at root of script file, outside of any function.
 */

(function(w,d){
	var u=null;
	w.__FILE__=(function(){
		try{u();}catch(err){
			if(err.stack){
				u=(/(http[s]?:\/\/.*):\d+:\d+/m).exec(err.stack);
				if(u&&u.length>1){ return u[1]; }
			}
			u = (d.scripts.length>0) ? d.scripts[d.scripts.length-1].src : "";
			if (u.length > 0 && u.indexOf("://") < 0 && u.substring(0,1) != "/" ){
				u = location.protocol + "//" + location.host + "/" + u;
			}			
			return u;
		}
	})();
	w.__DIR__=(function(f){
		f=(/^(.*\/)[a-z0-9 -_]+\.[a-z]+$/i).exec(f);
		return (f&&f.length>1)?f[1]:"";
	})(w.__FILE__);
})(window, document);

console.log(__FILE__);
console.log(__DIR__);

scriptpath.min.js

/**
 * __DIR__ & __FILE__ for JavaScript (was tested in IE 7-10)
 * This definition must be inserted at root of script file, outside of any function.
 */
(function(w,d){var u=null;w.__FILE__=(function(){try{u();}catch(err){if(err.stack){u=(/(http[s]?:\/\/.*):\d+:\d+/m).exec(err.stack);if(u&&u.length>1){return u[1];}}u=(d.scripts.length>0)?d.scripts[d.scripts.length-1].src:"";if(u.length>0 && u.indexOf("://")<0 && u.substring(0,1)!="/"){u=location.protocol+"//"+location.host+"/"+u;}return u;}})();w.__DIR__=(function(f){f=(/^(.*\/)[a-z0-9 -_]+\.[a-z]+$/i).exec(f);return (f&&f.length>1)?f[1]:"";})(w.__FILE__);})(window, document);