I am using GSAP in a CMS site which loads a lot of javascripts on certain pages, and two of such pages throws following error from TweenMax library, I can list all the libraries it is loading if necesarry. This certain error only happens if I launch animations on document.ready event but if I use timer(which is how I am going to use it in future) then this error don't occur, still I would like to know what might be causing this to happen. EDIT: This error doesn't occur in firefox. Also I would like to know if jquery plugin is being dropped in future as its documentation is removed?

I never used MooTools selectors, problem is with GSAP selectors while using it with MooTools. To prove my point check my last code where I use jQuery selector and code works fine, removed $() to get rid of jQuery selectors and GSAP fails(in presence of MooTools). Remove jQuery to use GSAP with MooTools only and GSAP selectors will fail(take a look at my first codepen). I don't know if MooTools is doing it wrong or GSAP, neither is problem of Joomla because above code is single HTML file with similar behavior. My knowledge isn't that deep but I guess when we declare noConflict before MooTools, it takes control of more than just $ sign and affects GSAP in the process. GSAP developers should look into it. Finally if anybody comes to this thread with same problem, I will recommend to use jQuery selectors. Thank you.

error cannot assign to read only property of '_gsTweenID'

By Sahil, September 1, 2015 in GSAP. Views: 13,118

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Go to solution Solved by Sahil, September 3, 2015

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 Some information, especially the syntax, may be out of date for GSAP 3.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

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error cannot assign to read only property of '_gsTweenID'

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