wp/wp-includes/js/dist/vendor/wp-polyfill-node-contains.js
author ymh <ymh.work@gmail.com>
Fri, 05 Sep 2025 18:40:08 +0200
changeset 21 48c4eec2b7e6
parent 18 be944660c56a
permissions -rw-r--r--
Add CLAUDE.md documentation and sync WordPress core files - Add comprehensive CLAUDE.md documentation file with project architecture, development setup, database operations, WordPress CLI usage, file sync procedures, and Mercurial commands - Update WordPress core files from wordpress/ to wp/ directory - Sync latest WordPress admin interface, includes, and core functionality - Update plugins: portfolio plugin with latest BWS framework and fancybox integration - Maintain custom configuration and theme files 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>


// Node.prototype.contains
(function() {

	function contains(node) {
		if (!(0 in arguments)) {
			throw new TypeError('1 argument is required');
		}

		do {
			if (this === node) {
				return true;
			}
		// eslint-disable-next-line no-cond-assign
		} while (node = node && node.parentNode);

		return false;
	}

	// IE
	if ('HTMLElement' in self && 'contains' in HTMLElement.prototype) {
		try {
			delete HTMLElement.prototype.contains;
		// eslint-disable-next-line no-empty
		} catch (e) {}
	}

	if ('Node' in self) {
		Node.prototype.contains = contains;
	} else {
		document.contains = Element.prototype.contains = contains;
	}

}());