DOM:element.getAttributeNode

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« Gecko DOM Reference

Contents 1 Summary 2 Syntax 3 Example 4 Notes 5 Specification

[edit] Summary

Returns the specified attribute of the specified element, as an Attr node.

[edit] Syntax

attrNode = element.getAttributeNode(attrName) 

• attrNode is an Attr node for the attribute.
• attrName is a string containing the name of the attribute.

[edit] Example

// html: <div id="top" /> 
var t = document.getElementById("top"); 
var idAttr = t.getAttributeNode("id"); 
alert(idAttr.value == "top")

[edit] Notes

The Attr node inherits from Node, but is not considered a part of the document tree. Common Node attributes like parentNode, previousSibling, and nextSibling are null for an Attr node. You can, however, get the element to which the attribute belongs with the ownerElement property.

getAttribute is usually used instead of getAttributeNode to get the value of an element's attribute.

DOM methods dealing with element's attributes:

Not namespace-aware, most commonly used methods	Namespace-aware variants (DOM Level 2)	DOM Level 1 methods for dealing with Attr nodes directly (seldom used)	DOM Level 2 namespace-aware methods for dealing with Attr nodes directly (seldom used)
setAttribute (DOM 1)	setAttributeNS	setAttributeNode	setAttributeNodeNS
getAttribute (DOM 1)	getAttributeNS	getAttributeNode	getAttributeNodeNS
hasAttribute (DOM 2)	hasAttributeNS	-	-
removeAttribute (DOM 1)	removeAttributeNS	removeAttributeNode	-

[edit] Specification

DOM Level 2 Core: getAttributeNode (introduced in DOM Level 1 Core)