Attr: name property
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.
The read-only name
property of the Attr
interface returns the qualified name of an attribute, that is the name of the attribute, with the namespace prefix, if any, in front of it. For example, if the local name is lang
and the namespace prefix is xml
, the returned qualified name is xml:lang
.
The qualified name is always in lower case, whatever case at the attribute creation.
Value
A string representing the attribute's qualified name.
Example
The following example displays the qualified name of the first attribute of the two first elements, when we click on the appropriate button.
HTML
html
<svg xml:lang="en-US" class="struct" height="1" width="1">Click me</svg>
<label xml:lang="en-US" class="struct"></label>
<p>
<button>Show value for <svg></button>
<button>Show value for <label></button>
</p>
<p>
Qualified name of the attribute <code>xml:lang</code>:
<output id="result">None.</output>
</p>
JavaScript
js
const elements = document.querySelectorAll(".struct");
const buttons = document.querySelectorAll("button");
const outputEl = document.querySelector("#result");
let i = 0;
for (const button of buttons) {
const element = elements[i];
button.addEventListener("click", () => {
const attribute = element.attributes[0];
outputEl.value = attribute.name;
});
i++;
}
Specifications
Specification |
---|
DOM Standard # dom-attr-name |
Browser compatibility
BCD tables only load in the browser
See also
- The properties
Attr.localName
, returning the local part of the qualified name of the attribute, andAttr.prefix
, the namespace prefix. - The
Element.tagName()
property, returning the qualified name of anElement
.