direction in ScrollTrigger

[Romanus 4 Likes (Newbie)]

Hey! I forgot how to find scroll direction in ScrollTrigger. onUpdate fires a lot of times. And I need only when the direction changes. I looked in the documentation and couldn't find

[Romanus 4 Likes (Newbie)]

It seems to be possible to do this by storing the value in a variable and comparing it. Works great) Do you think several onUpdates will heavily load the user's computer? Does it make sense to do one check and pass it to the right components?

[GreenSock 18,566 Likes (Superhero)]

3 hours ago, Romanus said:

It seems to be possible to do this by storing the value in a variable and comparing it. Works great) Do you think several onUpdates will heavily load the user's computer? Does it make sense to do one check and pass it to the right components?

I wouldn't worry about it at all. It's cheap. 

ScrollTrigger.create({
  ...
  onUpdate: self => {
    if (self.direction !== self.prevDirection) {
      console.log("toggled!");
      self.prevDirection = self.direction;
    }
  }
});