NamedNodeMap.length
The read-only length property of the NamedNodeMap interface
is the number of objects stored in the map.
Value
A number containing the number of objects in the map
Example
<pre zero="test" one="test" two="test"></pre>
const pre = document.getElementsByTagName("pre")[0];
const attrMap = pre.attributes;
let result = "The `test` attribute contains " + attrMap.length + " attributes.\n";
pre.textContent = result;
Specifications
| Specification |
|---|
| DOM Standard # dom-namednodemap-length |
Browser compatibility
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