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Asked: 2026-05-27T23:47:52+00:00

Can somebody explain in simple terms, what is the difference between classical DOM parentNode

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Can somebody explain in simple terms, what is the difference between classical DOM parentNode and newly introduced in Firefox 9 parentElement

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  1. Editorial Team

    parentElement is new to Firefox 9 and to DOM4, but it has been present in all other major browsers for ages.

    In most cases, it is the same as parentNode. The only difference comes when a node’s parentNode is not an element. If so, parentElement is null.

    As an example:

    document.body.parentNode; // the <html> element
document.body.parentElement; // the <html> element

document.documentElement.parentNode; // the document node
document.documentElement.parentElement; // null

(document.documentElement.parentNode === document);  // true
(document.documentElement.parentElement === document);  // false

    Since the <html> element (document.documentElement) doesn’t have a parent that is an element, parentElement is null. (There are other, more unlikely, cases where parentElement could be null, but you’ll probably never come across them.)

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