Tell users what the deprecated icon (and others) mean.

[hamishwillee]

Summary

Consider https://developer.mozilla.org/en-US/docs/Web/HTML/Element/body#attributes

The attributes are marked as deprecated using the {{deprecated_inline}} macro, which renders as a little bin with a hover as shown:

1. It would be good if this hover actually said the same as BCD: Deprecated. Not for use in new websites."
2. We get a lot of questions about what deprecated actually means (loooonnnnngggg discussion on this here) because the term has lots of meanings - not just "the spec says don't use it".

• We'd like to perhaps have a glossary page with this and link to it. Make sense?

URL

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/body#attributes

Reproduction steps

Just go to any page

Expected behavior

1. Hover over icon says "Deprecated. Do not use on new websites"
2. Make icon link to glossary term explaining what deprecation means. If you agree with approach we'll create that.

Actual behavior

You see the bin icon, you infer it is bad to use, but you don't know under what conditions you can/cannot use it.

Device

Desktop

Browser

Firefox

Browser version

Stable

Operating system

Windows

Screenshot

Anything else?

There are some similar issues like #5571 but not for the specific issue of the hover text and possibly providing more information.

Validations

• I have read the Community Participation Guidelines.
• I have verified that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• I have checked that this is a concrete bug. For Q&A open a GitHub Discussion.