Find DOM Element Parent Node

findParent.js

'use strict';

module.exports = function findParent(childElement, parentNodeSelector) {
    while (childElement && childElement.parentNode !== document) {
        if (childElement.hasAttribute(parentNodeSelector) || childElement.className.indexOf(parentNodeSelector) > -1) {
            return childElement;
        }
        childElement = childElement.parentNode;
    }
    return null;
};