HTMLOutputElement: htmlFor property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since October 2018.

The htmlFor property of the HTMLOutputElement interface is a string containing a space-separated list of other elements' ids, indicating that those elements contributed input values to (or otherwise affected) the calculation. It reflects the for attribute of the <output> element.

Value

A string.

Examples

js
const outputElem = document.getElementById("result");
for (const id of outputElem.htmlFor.split(" ")) {
  const elem = document.getElementById(id);
  elem.style.outline = "2px solid red";
}

Specifications

Specification
HTML Standard
# dom-output-htmlfor

Browser compatibility

BCD tables only load in the browser

See also