The Attr.prefix
read-only property returns the namespace
prefix of the specified attribute, or null
if no prefix is specified.
Before DOM4 this API was defined within the Node
interface.
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
Specification | Status | Comment |
---|---|---|
DOM The definition of 'Attr: prefix' in that specification. |
Living Standard | |
DOM4 The definition of 'Attr.prefix' in that specification. |
Obsolete |
Browser compatibility
BCD tables only load in the browser