The HTML Output element (<output>
) is a container element into which a site or app can inject the results of a calculation or the outcome of a user action.
Content categories | Flow content, phrasing content, listed, labelable, resettable form-associated element, palpable content. |
---|---|
Permitted content | Phrasing content. |
Tag omission | None, both the starting and ending tag are mandatory. |
Permitted parents | Any element that accepts phrasing content. |
Implicit ARIA role | status |
Permitted ARIA roles | Any |
DOM interface | HTMLOutputElement |
Attributes
This element includes the global attributes.
for
- A space-separated list of other elementsβ
id
s, indicating that those elements contributed input values to (or otherwise affected) the calculation. form
- The
<form>
element to associate the output with (its form owner). The value of this attribute must be theid
of a<form>
in the same document. (If this attribute is not set, the<output>
is associated with its ancestor<form>
element, if any.) - This attribute lets you associate
<output>
elements to<form>
s anywhere in the document, not just inside a<form>
. It can also override an ancestor<form>
element. name
- The element's name. Used in the
form.elements
API.
The <output>
value, name, and contents are NOT submitted during form submission.
Examples
In the following example, the form provides a slider whose value can range between 0
and 100
, and an <input>
element into which you can enter a second number. The two numbers are added together, and the result is displayed in the <output>
element each time the value of any of the controls changes.
<form oninput="result.value=parseInt(a.value)+parseInt(b.value)"> <input type="range" id="b" name="b" value="50" /> + <input type="number" id="a" name="a" value="10" /> = <output name="result" for="a b">60</output> </form>
Accessibility Concerns
Many browsers implement this element as an aria-live
region. Assistive technology will thereby announce the results of UI interactions posted inside it without requiring that focus is switched away from the controls that produce those results.
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of '<output>' in that specification. |
Living Standard | |
HTML5 The definition of '<output>' in that specification. |
Recommendation |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
output | Chrome Full support 10 | Edge Full support β€18 | Firefox Full support 4 | IE No support No | Opera Full support 11 | Safari Full support 7 | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 4 | Opera Android ? | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
for | Chrome Full support 10 | Edge Full support β€18 | Firefox Full support 4 | IE No support No | Opera Full support 11 | Safari Full support 7 | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 4 | Opera Android ? | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown