Element: hasAttributeNS() method
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 hasAttributeNS()
method of the Element
interface returns a boolean value indicating whether the current element has the specified attribute with the specified namespace.
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 hasAttribute()
method instead.
Syntax
js
hasAttributeNS(namespace,localName)
Parameters
Return value
A boolean.
Examples
js
// Check that the attribute exists before you set a value
const d = document.getElementById("div1");
if (
d.hasAttributeNS("http://www.mozilla.org/ns/specialspace/", "special-align")
) {
d.setAttribute("align", "center");
}
Specifications
Specification |
---|
DOM # ref-for-dom-element-hasattributens① |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
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hasAttributeNS |
Legend
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- Full support
- Full support
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.