Bootstrap: Collapse isn't compatible with HTML 5.0

[CallMarl]

windows 10 Pro 1903
google chrome

link : https://mathiasbynens.be/notes/html5-id-class#:~:text=The%20HTML%204.01%20spec%20states,there%20is%20no%20such%20limitation.

Hello,
I have id's auto generated then, I note if id start with numbers collapse doesn't work, then event like show.bs.modal are never called. Perhaps is the same with other component like tabs.

Thank you.

[XhmikosR]

Bug reports must include a live demo of the issue. Per our contributing guidelines, please create a reduced test case via CodePen or JS Bin and report back with your link, Bootstrap version, and specific browser and Operating System details.

This is an automated reply

[patrickhlauke]

bootstrap uses the standard javascript query selector functions (which rely on valid CSS selectors, which do NOT allow for identifiers to start with a number). for now, you'll need to manually escape any special characters and leading numbers https://mathiasbynens.be/notes/css-escapes

[CallMarl]

Thank you, for your answer could you indicate in the documentation? I spend more than one day on this bug, thinking the error was due of my JS code. No warnings or errors are raised.

Thank you,
Paul

[mdo]

Does this need a docs mention? I feel like this it outside our wheelhouse.

[CallMarl]

I think, yes, because you can build collapse, tabs... only based on HTML.

[XhmikosR]

We already have a mention but improvements are welcomed.

https://getbootstrap.com/docs/4.5/getting-started/javascript/#selectors

[mdo]

Closing per last comment then—already have something to point folks to for now and can revisit if others find room for improvement here.