Are Javascript arrays primitives? Strings? Objects?

Are arrays merely objects in disguise? Why/why not? In what way(s) are they (such/not)?

How to convert an object into array of objects in JavaScript

I have an object like this:

Javascript – how can I generate a new name for a new object and then add it to an array

I need to write a function that returns an array of objects.

How to use an array of objects with a key:value pair for HTML element id with classList.toggle?

I want to loop through a number of div elements by element id and use setTimeout to toggle a class. Let me illustrate: