Transition Events

Bare method names, fired at the edges of the animation:

<transition transition="fly({ y: 200 })"
  onintrostart="introStart" onintroend="introEnd"
  onoutrostart="outroStart" onoutroend="outroEnd">
  <p>…</p>
</transition>

• onintrostart / onintroend — around the enter animation.
• onoutrostart / onoutroend — around the leave animation (the element is removed from the DOM after onoutroend).