Example
An <output> element located outside a form (but still a part of the form):
<form action="demo_form.asp" id="numform"
oninput="x.value=parseInt(a.value)+parseInt(b.value)">0
<input type="range" id="a" name="a" value="50">100
+<input type="number" id="b" name="b" value="50">
<br><br>
<input type="submit">
</form>
<output form="numform" name="x" for="a b"></output>
Try it Yourself »
Definition and Usage
The form attribute specifies one or more forms the <output> element belongs to.
Browser Support
| Attribute | |||||
|---|---|---|---|---|---|
| form | Yes | Not supported | Yes | Yes | Yes |
Differences Between HTML 4.01 and HTML5
The <output> tag is new in HTML5.
Syntax
<output form="form_id">
Attribute Values
| Value | Description |
|---|---|
| form_id | Specifies the form element the <output> element belongs to. The value of this attribute must be the id attribute of a <form> element in the same document. |