This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The required property of the HTMLSelectElement interface specifies that the user must select an option with a non-empty string value before submitting a form. It reflects the <select> element's required attribute.
A boolean.
const selectElement = document.getElementById("fruits");
console.log(selectElement.required);
| Specification |
|---|
| HTML> # dom-select-required> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
required |
10 | 12 | 4 | ≤12.1 | 5.1 | 18 | 4 | ≤12.1 | 5 | 1.0 | 4.4 | 5 |
<select>HTMLSelectElement.validity:required pseudo-class
© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement/required