getParentsUntil.js

/*!
 * Get all of an element's parent elements up the DOM tree until a matching parent is found
 * (c) 2021 Chris Ferdinandi, MIT License, https://gomakethings.com
 * @param  {Node}   elem   The element
 * @param  {String} stop   The test condition for the parent to stop at
 * @param  {String} filter The test condition to filter against [optional]
 * @return {Array}         The parent elements
 */
function getParentsUntil (elem, stop, filter) {

	// Setup parents array
	let parents = [];
	let parent = elem.parentNode;
	let index = 0;

	// Make sure callbacks are valid
	if (stop && typeof stop !== 'function') { stop = null; }
	if (filter && typeof filter !== 'function') { filter = null; }

	// Get matching parent elements
	while (parent && parent !== document) {

		// If there's a stop test and the element matches, break
		if (stop) {
			if (stop(parent, index, elem)) break;
		}

		// If there's a filter and the element matches, push it to the array
		// Otherwise, just add it to the array
		if (filter) {
			if (filter(parent, index, elem)) {
				parents.push(parent);
			}
		} else {
			parents.push(parent);
		}

		index++;
		parent = parent.parentNode;

	}

	return parents;

}