Don’t Disable Form Controls

https://gyazo.com/d8a7db1e5c47091e75e7d8d960a74644

The place where buttons should not be disabled is within the context of submitting a form

When you hear a usability, user experience, accessibility, research, or interface design professional warn you not to disable buttons, they are generally talking about submit buttons.

Telling authors not to disable submit buttons is too narrow. Authors should not disable any form fields.