DronRathore

var classA = function(options){
        if (this instanceof classA){
                this.options = options;
                return this
        } else {
                return new classA(options)
        }
}

classA.prototype.someAsnyc = function(callback, flag){

DronRathore

var globalTime = new Date().getTime();
var b = function(callback){
        var date = new Date().getTime();
        for (var i=0;i<10000;i++)
                callback();
        console.log("Completed a function test in", new Date().getTime()-date);
}
b(function(){
	var date = new Date().getTime();
        //console.log("Started A at:", date-globalTime);