Element: setAttributeNode() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

ThesetAttributeNode() method of theElement interface adds a newAttr node to the specified element.

If you don't need to work with the attribute node (such as cloning from another element) before adding it, you can use thesetAttribute() method instead.

Syntax

setAttributeNode(attribute)

Parameters

attribute: TheAttr node to add to the element.

Return value

The replaced attribute node, if any, returned by this function.

Examples

This example copies thelang attribute from one element to another.

HTML

html

<div lang="en-US">one</div><div>two</div>

JavaScript

const d1 = document.getElementById("one");const d2 = document.getElementById("two");const a = d1.getAttributeNode("lang");d2.setAttributeNode(a.cloneNode(true));// Returns: 'en-US'console.log(d2.attributes[1].value);