📅 最后修改于: 2020-11-10 05:14:02 🧑 作者: Mango
Attr接口表示Element对象中的属性。通常，属性的允许值是在与文档关联的架构中定义的。 Attr对象实际上不是它们描述的元素的子节点，因此不被视为文档树的一部分。因此，对于子节点parentNode ， previousSibling和nextSibling属性值为null 。
下表列出了Attribute对象的属性–
| Attribute | Type | Description |
|---|---|---|
| name | DOMString | This gives the name of the attribute. |
| specified | boolean | It is a boolean value which returns true if the attribute value exists in the document. |
| value | DOMString | Returns the value of the attribute. |
| ownerElement | Element | It gives the node to which attribute is associated or null if attribute is not in use. |
| isId | boolean | It returns whether the attribute is known to be of type ID (i.e. to contain an identifier for its owner element) or not. |