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className - Toggle?

kez1304 test
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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 Some information, especially the syntax, may be out of date for GSAP 3.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. 

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Hi guys,


Just quickly (I haven't got time atm to slap an example codepen together), is there a way to toggle the CSS className attribute?



I have an object that's being manipulated a lot, and one of the tweens is removing a class from an element, and animating it's new position accordingly.

className: '-=responsive-example_small'

This works fine, until I reverse the timeline... At which point the class isn't re-added to object, and obviously, no animation occurs, resulting in a broken reverse animation.


I know I can remove the "-=", but that overwrites all the classes on the element in question as well, which is again, undesirable and dangerous to maintain.


Is there a toggle for ClassName that I simply haven't come across before? Much like JQuery's $(e).toggleClass('someClass')?


If not, is it a possibility for the future?



Thanks a lot! :)

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Hi kez1304  :)


I don't know why it wouldn't work on reverse. Without a CodePen it's a hard to troubleshoot.


Here's a simple example of the timeline reversing after removing a class on play() and it all works correctly.


See the Pen wgwmOV by PointC (@PointC) on CodePen


Without seeing the problem, I'm not sure what else we can offer you for a solution.


Happy tweening.


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We'd have to see why you're animating via a class change rather than animating the properties in the tween and the reason for the invalidate(). 


Feel free to fork my pen from above and recreate a simplified version of the problem you're experiencing. Without code and a desired behavior, it's tough to give the best advice.


Happy tweening.


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