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Single TimeLineMax Multiple Objects

allen0346 test
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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 Some information, especially the syntax, may be out of date for GSAP 3.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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Hi,

   

   I want to make dark night with twinkling stars. However, all stars will twinkle together. I mean they will become bright and dark at same time. How can I make them twinkle separately. Thanks for the help!!!!

 

Following content is my code.

 

 

// ----- create star -----

function createStar(){

  var tmpStar = document.createElement('figure')

  tmpStar.className = "star";

  tmpStar.style.top =100*Math.random()+'%';

  tmpStar.style.left = 100*Math.random()+'%';

  document.getElementById('sky').appendChild(tmpStar);

}

function myRandom(){

  return 100*Math.random();

}

var i = 40;

while(i){

 

  createStar();

  i-=1;

}

 

// ----- star twinkling -----

var starTest = document.getElementsByClassName("star");

var starTween = new TimelineMax({repeat:-1});

starTween.add(TweenMax.to(starTest,0.8,{opacity:1,delay:0}));

starTween.add(TweenMax.to(starTest,0.5,{opacity:0,delay:1}));

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