Web/API/Element/prefix

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

Before DOM4 this API was defined within the Node interface.

Syntax

string = element.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
DOMThe definition of 'Element: prefix' in that specification.	Living Standard

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`	Chrome Full support 31 Notes' Full support 31 Notes' Notes' This API was previously available on the `Node` API.	Edge Full support 13	Firefox Full support 48 Notes' Full support 48 Notes' Notes' This API was previously available on the `Node` API.	IE ?	Opera Full support Yes	Safari Full support 10	WebView Android Full support Yes	Chrome Android Full support 31 Notes' Full support 31 Notes' Notes' This API was previously available on the `Node` API.	Firefox Android Full support 48 Notes' Full support 48 Notes' Notes' This API was previously available on the `Node` API.	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support 2.0 Notes' Full support 2.0 Notes' Notes' This API was previously available on the `Node` API.

Legend

Full support: Full support
Compatibility unknown: Compatibility unknown
See implementation notes.': See implementation notes.