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HTML 

              
                <h1>Hide a target when it is not being animated?</h1>
<div id='overlay' style='background-color:green;position:absolute;width:100px;height:100px;'></div>
<br/><br/><br/><br/><br/><br/>
<b>How can I hide this target in a time slice on a long time line when it is not being actively animated?</b></br>
Even better if the object is invisible from the beginning too.<br/><br/>

Implementation details are:
<ul>
<li>Animation commands are added in a loop reading from server JSON in real time</li>
<li>At the time to() is called, it is not known when the animation will ultimately stop</li>
<li>All to() arguments are variable in terms of the naive receiving JS code </li>
</ul>
!

CSS 

              
                #overlay {
  opacity: 0;
}
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JS 

              
                // Initialise timeline, 3465 is the known length of video media
t = new TimelineMax();
t.to(document.body, 3465, {opacity:1});

// Animation commands are added in a loop reading from server JSON
// Animation commands are for very short durations (typically 0.04 seconds)
// All to() arguments are variable in terms of the naive receiving JS code 
t.to('#overlay', 1, {x:"+=100", autoAlpha:1, ease:Power2.easeInOut, clearProps:'opacity'}, 0)
// ... time passes in both the browser and GreenSock timeline ...
t.to('#overlay', 1, {x:"+=100", autoAlpha:1, ease:Power2.easeInOut, clearProps:'opacity'}, 3)
t.to('#overlay', 1, {x:"+=100", autoAlpha:1, ease:Power2.easeInOut, clearProps:'opacity'}, 5)
t.to('#overlay', 1, {x:"+=100", autoAlpha:1, ease:Power2.easeInOut, clearProps:'opacity'}, 7)
t.to('#overlay', 1, {x:"+=100", autoAlpha:1, ease:Power2.easeInOut, clearProps:'opacity'}, 9)
!
999px

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