Deep clone object polyfill

deepCloneObject.js

function deepClone(object){
	var newObject = {};
	for(var key in object){
		if(typeof object[key] === 'object'  && object[key] !== null ){
		 newObject[key] = deepClone(object[key]);
		}else{
		 newObject[key] = object[key];
		}
	}
	return newObject;
}

In line 4 we also need to check for Array.

typeof [] and typeof {} are the same, which is object

let's say if object[key] is a function type, then newObject[key] is still pointing to the original object[key] instead of clone to a new memory space

it will not work for function, array values.