Attr.prefix

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

Syntax

string = attribute.prefix

Examples

The following logs "x" to the console.

<div x:id="example" onclick="console.log(this.attributes[0].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

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
prefix
1
12
1
9
≤12.1
1
1
18
4
≤12.1
1
1.0

See also

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https://developer.mozilla.org/en-US/docs/Web/API/Attr/prefix