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Node.prefix

Obsolete
This feature is obsolete.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 Specification The definition of 'Node.prefix' in that specification.	Obsolete	Specifies the behavior when it's set to `null`.
Document Object Model (DOM) Level 2 Core Specification The definition of 'Initial definition' in that specification.	Obsolete	Initial definition

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	No	12	1 — 48 1 — 48 This API was moved to the `Element` and `Attr` APIs according to the DOM4 standard. 5 this property was read-write; starting with Firefox 5.0 it is read-only, following the specification.	Yes Yes Only supported on `Element`.	No	Yes