This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The TreeWalker.root read-only property returns the root Node that the TreeWalker traverses.
A Node object.
const treeWalker = document.createTreeWalker(
document.body,
NodeFilter.SHOW_ELEMENT,
{
acceptNode(node) {
return NodeFilter.FILTER_ACCEPT;
},
},
false,
);
root = treeWalker.root; // document.body in this case
| Specification |
|---|
| DOM> # dom-treewalker-root> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
root |
1 | 12 | 4 | 9 | 3 | 18 | 4 | 10.1 | 3 | 1.0 | 3 | 3 |
TreeWalker interface.
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https://developer.mozilla.org/en-US/docs/Web/API/TreeWalker/root