HTML - use of the onbeforesubmit attribute

Question

I recently found a form event attribute called onbeforesubmit which processes a given function/request before the form is actually submitted.

While I found it to be useful, seems strange to me almost no 'official' documentation is found about this event attribute, with a vague reference to a Microsoft web page and some forums. No w3schools or w3 reference about it (not as far as I have looked up).

Is it a very old/deprecated event attribute or maybe an experimental one? I have tested it with Google Chrome so far.

Answer 1

its an old attribute . Its work can be replaced by onsubmit. you can write code in the manner of you want the execution and cal it on onsubmit