21. What is the difference between disabled and readonly?

A disabled control is generally not editable, focusable, or included in normal form submission. A readonly control cannot normally be edited by the user but can remain focusable and its value can be submitted when applicable.

Key Takeaways
  • disabled and readonly have different interaction and submission behavior.
  • Choose based on the intended user experience.
Knowledge Check

Which control is generally excluded from form submission?