Can I add custom HTML attributes such as “data-test” or “aria-label”. Like I want to add for the button widget a “data-test” attributes and this way edits the html of the button like this: <button data-test= submitButton>Submit</button>”. If I can add it, can you show me how to do it with images?
Try using formatString or customString widgets with context. You can print out any html that way.