This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The hasChildNodes() method of the Node interface returns a boolean value indicating whether the given Node has child nodes or not.
hasChildNodes()
None.
A boolean value that is true if the node has child nodes, and false otherwise.
let foo = document.getElementById("foo");
if (foo.hasChildNodes()) {
// Do something with 'foo.childNodes'
}
| Specification |
|---|
| DOM> # ref-for-dom-node-haschildnodes①> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
hasChildNodes |
1 | 12 | 1 | ≤12.1 | 1 | 18 | 4 | ≤12.1 | 1 | 1.0 | 4.4 | 1 |
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https://developer.mozilla.org/en-US/docs/Web/API/Node/hasChildNodes