Strange html syntax

Question

In the code I am working on I found this:

<div class="icon icon2  screen-icon" data-screen-idx=1>

What puzzles me is the last "attribute" (or whatever it is ) Is this data-screen-idx-1 legal in html tag? Please note that 1 is not quoted.

If yes, where can I find info about this. If not, why would someone write such thing?

This is possible with HTML5. See https://stackoverflow.com/questions/6164000/how-can-i-create-my-own-html-tag. — Tony Stark, Apr 26 '18 at 12:41

score 0 · Answer 1 · answered Apr 26 '18 at 12:41

0

Yes, this is valid HTML. They are called "data-attributes" and can be whatever you want, as long as they begin with data-.

See this article for more information. MDN - Using data attributes

answered Apr 26 '18 at 12:41

andrewmenich

1 Answers1