Uint8Array - is it really an array? And what about the other Uint#Arrays?

Uint8Arrays are obviously not arrays...

...as executed in console:

>var arr = new Uint8Array([70, 82, 65, 77, 64, 53, 49, 50]);
=new Uint8Array([70, 82, 65, 77, 64, 53, 49, 50])
>String.fromCharCode.apply(null,arr);
WARNING: Second argument to Function.apply must be an array

I do not really mind if there is another simple way to make a String out of Uint8Array.

May be in [1v71] Uint#Arrays are arrays.