HTMLCollection.namedItem()
The namedItem()
method of the HTMLCollection
interface returns
the first Element
in the collection whose id
or name
attribute match the specified name, or null
if no element matches.
In JavaScript, using the array bracket syntax with a String
, like collection["value"]
is equivalent to collection.namedItem("value")
.
Syntax
const item = collection.namedItem(key);
Parameters
key
is a string representing the value of theid
orname
attribute of the element we are looking for.
Return value
item
is the firstElement
in theHTMLCollection
matching the key, ornull
, if there are none.
Example
HTML
<div id="personal">
<span name="title">Dr.</span>
<span name="firstname">John</span>
<span name="lastname">Doe</span>
</div>
JavaScript
const container = document.getElementById('personal');
// Returns the HTMLSpanElement with the name "title" if no such element exists null is returned
const titleSpan = container.children.namedItem('title');
// The following variants return undefined instead of null if there's no element with a matching name or id
const firstnameSpan = container.children['firstname'];
const lastnameSpan = container.children.lastname;
Specification
Specification |
---|
DOM Standard # dom-htmlcollection-nameditem-key |
Browser compatibility
BCD tables only load in the browser