Element: prefix property

{{APIRef("DOM")}}

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

Value

A string.

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

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("Element.namespaceURI")}}
• {{domxref("Element.localName")}}
• {{domxref("Attr.prefix")}}