The read-only length
property of the NamedNodeMap
interface is the number of objects stored in the map.
The read-only length
property of the NamedNodeMap
interface is the number of objects stored in the map.
A number containing the number of objects in the map
html
<pre zero="test" one="test" two="test"></pre>
js
const pre = document.querySelector("pre"); const attrMap = pre.attributes; pre.textContent = `The 'test' attribute contains ${attrMap.length} attributes.\n`;
Specification |
---|
DOM Standard # dom-namednodemap-length |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
length |
1 | 12 | 1 | 5 | ≤12.1 | 1 | 4.4 | 18 | 4 | ≤12.1 | 1 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/NamedNodeMap/length