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Element: id 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 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

Specification
DOM>
# ref-for-dom-element-id①>

Browser compatibility

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

See also

  • The DOM id global attribute.

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https://developer.mozilla.org/en-US/docs/Web/API/Element/id