Could someone help describe the two types of array storage in Javascript?

Question

I\'m reading this article about V8 on HTML5Rocks. The article is old but I understand almost none of it and it bothers me. I\'m taking this 1 step at a time but could someone

Answer 1

sir i can be wrong but according to your question what i have observed is explained

when we initialise an array it internally gets key as 0,1,2....etc as i pushed element with value its into array but array does not consider it

ex :

var arr = new Array()

arr[0] = 1
arr[1] = 2
arr[2] = "myname";
arr['myname'] = nick;

but when i do arr.length i get 3 so it does not consider the key apart from numeric but if i write arr[3] = {myname:'nick'} then it consider it as elements.

internally i think to keep the linear array different it looks for '{}'