Element: setAttributeNodeNS() method
The setAttributeNodeNS()
method of the Element
interface adds a new namespaced Attr
node to an 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 setAttributeNS()
method instead.
If you are working with HTML documents and you don't need to specify the requested attribute as being part of a specific namespace, use the setAttribute()
method instead.
Syntax
setAttributeNodeNS(attributeNode)
Parameters
attributeNode
is anAttr
node.
Return value
The replaced attribute node, if any, returned by this function.
Examples
// <div id="one" xmlns:myNS="http://www.mozilla.org/ns/specialspace"
// myNS:special-align="utterleft">one</div>
// <div id="two">two</div>
const myns = "http://www.mozilla.org/ns/specialspace";
const d1 = document.getElementById("one");
const d2 = document.getElementById("two");
const a = d1.getAttributeNodeNS(myns, "special-align");
d2.setAttributeNodeNS(a.cloneNode(true));
alert(d2.attributes[1].value); // returns: `utterleft'
Notes
If the specified attribute already exists on the element, then that attribute is replaced with the new one and the replaced one is returned.
Note that if you try to set without cloning the node, you may see NS_ERROR_DOM_INUSE_ATTRIBUTE_ERR
"Attribute already in use" error, as the DOM requires cloning for Attr
to be reused (unlike other Nodes which can be moved).
Specifications
Specification |
---|
DOM Standard # dom-element-setattributenodens |
Browser compatibility
BCD tables only load in the browser