Function toggleClass

src/js/utils/elements.js:186–202

(element, className, force)

// Mirror Element.classList.toggle, with IE compatibility for "force" argument
export function toggleClass(element, className, force) {
  if (is.nodeList(element)) {
    return Array.from(element).map(e => toggleClass(e, className, force));
  }

  if (is.element(element)) {
    let method = 'toggle';
    if (typeof force !== 'undefined') {
      method = force ? 'add' : 'remove';
    }

    element.classList[method](className);
    return element.classList.contains(className);
  }

  return false;
}

// Has class name
export function hasClass(element, className) {