Get full URL using current script

script.js

    var plgPath = function(){
        var path = null, currentScript = null;
        var scripts = document.getElementsByTagName("script");
        for(var i in scripts){
            if(scripts[i].src.indexOf("script.js") >= 0){
                currentScript = scripts[i];
                break;
            }
        }
        path = currentScript.src.substring(0, currentScript.src.lastIndexOf("/") + 1);
        return path;
    }