Jump to content


Conditionally execute tween animations

Warning: Please note

This thread was started before GSAP 3 was released. Some information, especially the syntax, may be out of date for GSAP 3. Please see the GSAP 3 migration guide and release notes for more information about how to update the code to GSAP 3's syntax. 

Recommended Posts

I'd like to have a fromTo TweenMax run a function prior to executing its animations to determine whether it should perform the animations or remain in its current state.


The tween will always execute once, but repeat/revert animations should be governed by a function.


I've tried playing around with onUpdate and .pause(), but am not having any luck.


My code is looking something like this:


onUpdateParams: ["{self}"],
onUpdate: function(tween) {
  if (some_condition) {
  } else {



Link to comment
Share on other sites

Hi Jon,


Welcome to the GreenSock forums.


You're code looks good. Don't see why it shouldn't work. Are you sure your condition is true?


I made a similar example: 

See the Pen a247a9292fd3ad2723bc3e2aa619d767 by GreenSock (@GreenSock) on CodePen

(open your js console)


Feel free to fork that pen and set it up so that it breaks like yours or provide some files that we can test to see exactly what's going on. Thanks.

  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.