What type of objects are the DOM objects?

Question

Are DOM objects regular Javascript objects? If not, what are they?

Answer 1

Does the DOM objects are reguler Javascript objects? if not, what are they?

No, they're "host objects". They don't necessarily play by all the same rules as native JavaScript objects.

They're in some sense objects, but they're added by the host environment and are not part of the ECMAScript specification.

For example, I don't believe there's anything that requires them to accept expando properties. Or in the case of functions, I don't know that they're required to have an accessible and extendable prototype property.

Also functions may or may not have the typical methods of Function.prototype, like .call() and .apply().

The rules are simply much looser than those of objects defined by the ECMAScript specification, so you can't necessarily rely on the same behavior in all cases.