What is the dirty and pristine state?

dirty and pristine are form field states that show whether the user has changed the value.

• dirty - the user has changed the field's value at least once.
• pristine - the field's value remains the same as it was on initialization.

Example:

1. The "email" field starts empty: pristine.
2. The user typed something and then even deleted it: it is still dirty, because the change already happened.

These states help determine whether, for example, the form needs to be saved or the user should be warned about unsaved changes.