Web/API/Node/prefix

ObsoleteThis feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

The Node.prefix read-only property returns the namespace prefix of the specified node, or null if no prefix is specified.

In DOM4 this API was moved from Node to the Element and Attr interfaces.

Syntax

string = node.prefix

Examples

The following logs "x" to the console.

<x:div onclick="console.log(this.prefix)"/>

Notes

This will only work when a namespace-aware parser is used, i.e. when a document is served with an XML MIME type. This will not work for HTML documents.

Specifications

Specification	Status	Comment
Document Object Model (DOM) Level 3 Core SpecificationThe definition of 'Node.prefix' in that specification.	Obsolete	Specifies the behavior when it's set to `null`.
Document Object Model (DOM) Level 2 Core SpecificationThe definition of 'Initial definition' in that specification.	Obsolete	Initial definition

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`prefix` Deprecated'Non-standard'	Chrome No support No	Edge No support 12 — 79	Firefox No support 1 — 48 Notes' No support 1 — 48 Notes' Notes' This API was moved to the `Element` and `Attr` APIs according to the DOM4 standard. Full support 5 Notes' Notes' this property was read-write; starting with Firefox 5.0 it is read-only, following the specification.	IE Full support Yes Notes' Full support Yes Notes' Notes' Only supported on `Element`.	Opera No support No	Safari Full support Yes	WebView Android No support No	Chrome Android No support No	Firefox Android Full support 9	Opera Android No support No	Safari iOS ?	Samsung Internet Android No support No

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
Non-standard. Expect poor cross-browser support.': Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.': Deprecated. Not for use in new websites.
See implementation notes.': See implementation notes.