HTMLOptionElement: value property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨July 2015⁩.

The value property of the HTMLOptionElement interface represents the value of the <option> element as a string, or the empty string if no value is set. It reflects the element's value attribute, if present. Otherwise, it returns or sets the contents of the element, similar to the textContent property.

Value

A string containing the value attribute value, if present, or the contents of the element.

Examples

const optionElement = document.querySelector("datalist option:first-of-type");
const oldValue = optionElement.value;
optionElement.value = oldValue.toUpperCase();