This has never been the case. Custom elements are DOM Elements and so are just JavaScript objects. Just like you can do aEl.disabled = true, you can set any prop to any type of value.
This has never been the case. Custom elements are DOM Elements and so are just JavaScript objects. Just like you can do aEl.disabled = true, you can set any prop to any type of value.
I think they mean in the markup via <some-tag data={anObject}> ala React, svelte, etc.