The input formaction attribute specifies the URL of the file that will process the input when the form is submitted.
Note: This attribute overrides the action attribute of the <form> element.
The formaction attribute works with the following input types: submit and image.
<!DOCTYPE html>
<html>
<body>
<h1>The input formaction attribute</h1>
<p>The formaction attribute specifies the URL of a file that will process the input when the form is submitted.</p>
<form action="/php/actionPagePost.php" method="post">
<label for="fname">First name:</label>
<input type="text" id="fname" name="fname"><br><br>
<label for="lname">Last name:</label>
<input type="text" id="lname" name="lname"><br><br>
<input type="submit" value="Submit">
<input type="submit" formaction="/php/formaction.php" value="Submit as Admin">
</form>
</body>
</html>