text: Vue.directive('changed', {
      componentUpdated(el, arg) {
          const callback = () => {
              el.classList.remove(arg.value)
              if (el.className == "") el.removeAttribute('class')
              el.removeEventListener('animationend', callback)
          }
          el.addEventListener('animationend', callback, false)
          el.classList.add(arg.value)
      }
  })