HTML <button> formAttribute
Example
A submit button located outside the form (but still part of the form):
<form action="demo-form.php" method="get" id="nameform">
First name: <input type="text" name="fname" /><br>
Last name: <input type="text" name="lname" /><br>
</form>
<p>The button below is outside the form element, but is still part of the form.</p>
<button type="submit" form="nameform" value="Submit">Submit</button>
First name: <input type="text" name="fname" /><br>
Last name: <input type="text" name="lname" /><br>
</form>
<p>The button below is outside the form element, but is still part of the form.</p>
<button type="submit" form="nameform" value="Submit">Submit</button>
Try it Yourself »
Browser Support
Except for Internet Explorer, all other major browsers support the form attribute.
Definition and Usage
The form attribute specifies that a button belongs to one or more forms.
Differences between HTML 4.01 and HTML5
The form attribute is a new attribute in HTML5.
Syntax
<button form="form_id">
Attribute Values
| Value | Description |
|---|---|
| form_id | The id of the form the button belongs to. To reference more than one form, use a space-separated list. |
HTML <button> Tag Other Extensions