import hasClass from './hasClass'; /** * Adds a CSS class to a given element. * * @param element the element * @param className the CSS class name */ export default function addClass(element, className) { if (element.classList) element.classList.add(className);else if (!hasClass(element, className)) if (typeof element.className === 'string') element.className = element.className + " " + className;else element.setAttribute('class', (element.className && element.className.baseVal || '') + " " + className); }