The Attr.localName
read-only property returns the local part of the qualified name of an attribute.
In previous DOM specifications this API was defined within the Node
interface.
Syntax
name = attribute.localName
Return value
A DOMString
representing the local part of the attribute's qualified name.
Example
The following example shows "id" in an alert dialog.
HTML Content
<button id="example">Click me</button>
JavaScript Content
const element = document.querySelector("#example"); element.addEventListener("click", function() { const attribute = element.attributes[0]; alert(attribute.localName); });
Notes
The local name of an attribute is the part of the attribute's qualified name that comes after the colon. Qualified names are typically used in XML as part of the namespace(s) of the particular XML documents.
Note: In Gecko 1.9.2 and earlier, the property returns the upper-cased version of the local name for HTML attributes in HTML DOMs (as opposed to XHTML attributes in XML DOMs). In later versions, in compliance with HTML5, the property returns in the case of the internal DOM storage, which is lower case for both HTML attributes in HTML DOMs and XHTML attributes in XML DOMs.
Specifications
Specification | Status | Comment |
---|---|---|
DOM The definition of 'Attr.localName' in that specification. |
Living Standard | Initial definition |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
localName | Chrome
Full support
46
| Edge Full support ≤18 | Firefox
Full support
48
| IE No support No | Opera
Full support
33
| Safari Full support 1.3 | WebView Android
Full support
46
| Chrome Android
Full support
46
| Firefox Android
Full support
48
| Opera Android
Full support
33
| Safari iOS Full support 1 | Samsung Internet Android
Full support
5.0
|
Legend
- Full support
- Full support
- No support
- No support
- See implementation notes.
- See implementation notes.