From http://www.w3schools.com (Copyright Refsnes Data)
The Attr object represents an attribute of an Element object.
The Attr object represents an attribute of an Element object. The allowable values for attributes are usually defined in a DTD.
Because the Attr object is also a Node, it inherits the Node object's properties and methods. However, an attribute does not have a parent node and is not considered to be a child node of an element, and will return null for many of the Node properties.
IE: Internet Explorer, F: Firefox, O: Opera, W3C: World Wide Web Consortium (Internet Standard)
| Property | Description | IE | F | O | W3C |
|---|---|---|---|---|---|
| baseURI | Returns the absolute base URI of the attribute | No | 1 | No | Yes |
| isId | Returns true if the attribute is known to be of type ID, otherwise it returns false | No | No | No | Yes |
| localName | Returns the local part of the name of the attribute | No | 1 | 9 | Yes |
| name | Returns the name of the attribute | 5 | 1 | 9 | Yes |
| namespaceURI | Returns the namespace URI of the attribute | No | 1 | 9 | Yes |
| nodeName | Returns the name of the node, depending on its type | 5 | 1 | 9 | Yes |
| nodeType | Returns the type of the node | 5 | 1 | 9 | Yes |
| nodeValue | Sets or returns the value of the node, depending on its type | 5 | 1 | 9 | Yes |
| ownerDocument | Returns the root element (document object) for an attribute | 5 | 1 | 9 | Yes |
| ownerElement | Returns the element node the attribute is attached to | No | 1 | 9 | Yes |
| prefix | Sets or returns the namespace prefix of the attribute | No | 1 | 9 | Yes |
| schemaTypeInfo | Returns the type information associated with this attribute | No | No | No | Yes |
| specified | Returns true if the attribute value is set in the document, and false if it's a default value in a DTD/Schema. | 5 | 1 | 9 | Yes |
| textContent | Sets or returns the textual content of an attribute | No | 1 | 9 | Yes |
| text | Returns the text of the attribute. IE-only property | 5 | No | No | No |
| value | Sets or returns the value of the attribute | 5 | 1 | 9 | Yes |
| xml | Returns the XML of the attribute. IE-only property | 5 | No | No | No |
From http://www.w3schools.com (Copyright Refsnes Data)