What behaviors on the front end will irritate programmers? _html/css_WEB-ITnose

I am a front-end person who knows a little about the back-end. In order not to embarrass my teammates, I would like to ask what behaviors on the front-end will embarrass programmers? Asking programmers for answers

Reply to discussion (solution)

Don’t understand programming ideas

The company doesn’t have a front-end. We have front-end Written by the backend staff. Just doing layout CSS, image processing, etc. It will have no impact on us, at least I didn’t expect it.