parent
element contains the child
element.parent
is not the same element as child
.Node.contains()
to check if the parent
element contains the child
element.const elementContains = (parent, child) =>
parent !== child && parent.contains(child);
elementContains( document.querySelector('head'), document.querySelector('title') ); // true elementContains(document.querySelector('body'), document.querySelector('body')); // false
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