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can't animate image height to toggle it

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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 Some information, especially the syntax, may be out of date for GSAP 3.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 all, i've a little problem i tried to resume in the attached codepen.


Say i've layout made of many containers, and i have an image i want to be displayed with an animation, a vertical toggle.

The very same code, only works if i've set, at JS line 29:

.from($target.find(".myImage"), 0.5, { width: 0, ease: Power3.easeOut })

 while it does not, most of the time, if i try:

.from($target.find(".myImage"), 0.5, { height: 0, ease: Power3.easeOut })


What am I missing?



See the Pen rpqBNQ by pileoni (@pileoni) on CodePen

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It would be great if in cases like this you could reduce your demo so that it only includes the code necessary to replicate the problem. 

No need for loops and multiple timelines. It just adds an additional layer of complexity. 


Being that every time I ran your demo it gave different results of showing different images in different places my guess is that your javascript code is running before your images are loaded and thus the engine has nothing to take a height measurement from. Try adding height attribute to your images or waiting until all the images are loaded.


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


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Thank you, the idea about the code may run before everything is loaded makes really sense.

In fact, i've change my code by using a series of promises and looks to works fine now.


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