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bodyContains: Walk up the nested shadow root chain to check if the body contains the element #2434

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bodyContains: Walk up the nested shadow root chain to check if the body contains the element #2434

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15 changes: 9 additions & 6 deletions src/htmx.js
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Original file line number Diff line number Diff line change
Expand Up @@ -764,13 +764,16 @@ var htmx = (function() {
* @returns {boolean}
*/
function bodyContains(elt) {
// IE Fix
const rootNode = elt.getRootNode && elt.getRootNode()
if (rootNode && rootNode instanceof window.ShadowRoot) {
return getDocument().body.contains(rootNode.host)
} else {
return getDocument().body.contains(elt)
// Shortcut for older browsers missing getRootNode() to avoid checking
// the condition on every iteration.
if (!elt.getRootNode) {
return getDocument().body.contains(elt);
}
// Escape from shadow root.
while (elt.getRootNode() instanceof window.ShadowRoot) {
elt = elt.getRootNode().host;
}
return getDocument().body.contains(elt);
}

/**
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