Javascript Reference - HTML DOM Attribute Objects
In the HTML DOM (Document Object Model), everything is a node.
The Attr object represents an HTML attribute.
An HTML attribute always belongs to an HTML element.
The NamedNodeMap object represents an unordered collection of an
elements attribute nodes.
Nodes in a NamedNodeMap can be accessed by name or by index (number).
Browser Support
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|---|---|---|---|---|---|
Attributes |
Yes | Yes | Yes | Yes | Yes |
Properties and Methods
| Property / Method | Description |
|---|---|
| attr. | Returns true if the attribute is of type Id, otherwise false |
| attr.name | Returns the name of an attribute |
| attr.value | Sets or gets the value of the attribute |
| attr.specified | Returns true if the attribute is specified, otherwise it returns false |
| nodemap.getNamedItem() | Returns attribute node from a NamedNodeMap. |
| nodemap.item() | Returns the node at a specified index in a NamedNodeMap |
| nodemap.length | Returns the number of nodes in a NamedNodeMap |
| nodemap.removeNamedItem() | Removes a specified attribute node |
| nodemap.() | Sets the specified attribute node (by name) |