The form attribute of the HTML <textarea> element is widely supported across modern web browsers. This attribute allows a <textarea> element to be associated with a <form> element even if it is not a direct descendant of that form within the HTML structure.

 

This broad support ensures that web developers can confidently use the form attribute to link text areas to their respective forms, regardless of the user's browser choice, as long as they are using relatively modern versions of these browsers.