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.


string = element.prefix


The following logs "x" to the console.

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


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.


Specification Status Comment
The definition of 'Element.prefix' in that specification.
Obsolete Initial definition

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support461 Yes481 ? Yes ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support ? ? Yes481 ? ? ?

1. This API was previously available on theNode API.

See also

Document Tags and Contributors

Contributors to this page: fscholz, erikadoyle, Sebastianz
Last updated by: fscholz,