Node.lookupPrefix()

The Node.lookupPrefix() method returns a DOMString containing the prefix for a given namespace URI, if present, and null if not. When multiple prefixes are possible, the result is implementation-dependent.

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
lookupPrefix
1
12
1
9
≤12.1
3
1
18
4
≤12.1
1
1.0

See also

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https://developer.mozilla.org/en-US/docs/Web/API/Node/lookupPrefix