are document.all and document.layers obsolete now

Question

I am going through some (old?) native javascript and I encountered a separation of document.getElementById, document.all and document.layers.

From what I know, document.all and document.layers are obsolete now, but I just wanted to make sure.

Answer 1

Yes, they are obsolete.

The document.all collection is specific to Internet Explorer. The document.layers collection was specific to Netscape. Neither is in the standards.

Today we use document.getElementById instead.

See also: https://developer.mozilla.org/en-US/docs/Mozilla_Web_Developer_FAQ#JavaScript_doesn.E2.80.99t_work.21_Why.3F