HTML5 <output> Tag

The HTML <output> tag is used to represent the result of a calculation or user action. It was introduced in HTML5.

The only content permitted inside this element is phrasing content. Both the starting and ending tag are mandatory for this element. The parent of the <output> tag can be any element that accepts phrasing content.

The following style is applied to this element by default:

output {
  display: inline;

output {
  unicode-bidi: -webkit-isolate;

Here is an example of using this tag:

<form onsubmit="return false" oninput="o.value = a.valueAsNumber + 25">
  <input name="a" type="number" step="any"> + 25 =
  <output name="o"></output>



A list of IDs of other elements, indicating that those elements contributed input values to (or otherwise affected) the calculation.


The form element that this element is associated with (its “form owner”). The value of the attribute must be an ID of a form element in the same document. If this attribute is not specified, the output element must be a descendant of a form element. This attribute enables you to place output elements anywhere within a document, not just as descendants of their form elements.


The name of the element.


See the Pen HTML output Tag by Tutorialio (@tutorialio) on CodePen.

Further Reading

  1. Read more about the HTML <output> element on MDN.
  2. You can also read the HTML <output> tag reference on W3C.

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