JavaScriptClosure

Array.prototype.isArray = true;

var ObjectCopier = (function () {
    var self = this; //this variable allow to access the public method inside the private one

    function copyArray(arr) { //private function
        var tempArr = [];
        for (var i = 0; i < arr.length; i++) {
            if (typeof (arr[i]) === "object" && arr[i].isArray) {
                tempArr.push(copyArray(arr[i]));
            } else if (typeof (arr[i]) === "object") {
                tempArr.push(self.deepCopy(arr[i]))
            } else {
                tempArr.push(arr[i]);
            }
        }
        return tempArr;
    }

    function deepCopy(object) { //public function
        var tempCopy = {};
        if (typeof (object) === "object" && object.isArray) {
            tempCopy= copyArray(object);
        } else if (typeof(object)==="object") {
            for (prop in object) {
                tempCopy[prop]= this.deepCopy(object[prop]);
            }
        } else {
            tempCopy= object;
        }
        return tempCopy;
    }

    //Make the functions public.
    return {
        copyArray: copyArray,
        deepCopy: deepCopy
    }
})();