W3cubDocs

/Web APIs

Element: id property

The id property of the Element interface represents the element's identifier, reflecting the id global attribute.

If the id value is not the empty string, it must be unique in a document.

The id is often used with getElementById() to retrieve a particular element. Another common case is to use an element's ID as a selector when styling the document with CSS.

Note: Identifiers are case-sensitive, but you should avoid creating IDs that differ only in the capitalization.

Value

A string.

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
id 23
1–23Only supported for HTMLElement, not all Element objects, such as SVGElement.
12 1 5 ≤12.1 1 4.4 25
18–25Only supported for HTMLElement, not all Element objects, such as SVGElement.
4 ≤12.1 1 1.5
1.0–1.5Only supported for HTMLElement, not all Element objects, such as SVGElement.

See also

  • The DOM id global attribute.

© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/Element/id