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Element: getAttributeNode() method

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

Syntax

getAttributeNode(attrName)

Parameters

attrName is a string containing the name of the attribute.

Return value

An Attr node for the attribute.

Examples

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

Notes

When called on an HTML element in a DOM flagged as an HTML document, getAttributeNode lower-cases its argument before proceeding.

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`	-

Specifications

Specification
DOM Standard # dom-element-getattributenode

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`getAttributeNode`	1	12	1	6	≤12.1	1	4.4	18	4	≤12.1	1	1.0

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https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttributeNode