Function toggleClass

src/js/utils/dom/toggleClass/toggleClass.ts:11–19

( elm: Element, classes: string | string[], add: boolean )

 * @param add     - Whether to add or remove a class.
 */
export function toggleClass( elm: Element, classes: string | string[], add: boolean ): void {
  if ( elm ) {
    forEach( classes, name => {
      if ( name ) {
        elm.classList[ add ? 'add' : 'remove' ]( name );
      }
    } );
  }
}