Method addClass

packages/core/src/dom_components/model/Component.ts:977–980

* Add classes * @param {Array |String} classes Array or string of classes * @return {Array} Array of added selectors * @example * model.addClass('class1'); * model.addClass('class1 class2'); * model.addClass(['class1', 'class2']); * // -> [SelectorObject, ...]

(classes: string | string[])

   * // -> [SelectorObject, ...]
   */
  addClass(classes: string | string[]) {
    const added = this.em.Selectors.addClass(classes);
    return this.classes.add(added);
  }

  /**
   * Set classes (resets current collection)