Element: setAttributeNode() method
The setAttributeNode() method of the Element interface adds a new Attr 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 the setAttribute() method instead.
Syntax
js
setAttributeNode(attribute)
Parameters
Return value
The replaced attribute node, if any, returned by this function.
Examples
This example copies the align attribute from one element to another.
HTML
html
<div id="one" align="left">one</div>
<div id="two">two</div>
JavaScript
js
let d1 = document.getElementById("one");
let d2 = document.getElementById("two");
let a = d1.getAttributeNode("align");
d2.setAttributeNode(a.cloneNode(true));
// Returns: 'left'
alert(d2.attributes[1].value);
Notes
If the attribute named already exists on the element, that attribute is replaced with the new one and the replaced one is returned.
Specifications
| Specification |
|---|
| DOM Standard # dom-element-setattributenode |
Browser compatibility
BCD tables only load in the browser