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HTML

              
                <link href='//fonts.googleapis.com/css?family=Signika+Negative:300' rel='stylesheet' type='text/css'>
<h3>You can only toggle direction when the tween is not active</h3>
<div class="wrapper">
  <div class="box1"></div>
</div>
<div class="wrapper">
  <div class="box2"></div>
</div>
<div class="wrapper">
  <div class="box3"></div>
</div>
<button id="a1" class="dark-grey-button club-demo-button">toggle tween direction</button> 
<button id="a2" class="dark-grey-button club-demo-button">toggle tween direction</button>
<button id="a3" class="dark-grey-button club-demo-button">toggle tween direction</button>
              
            
!

CSS

              
                body, html {
  font-family: Signika Negative, sans-serif;
  background: #111;
  color:#efefef;
  height:100%;
}

.wrapper {
  width:400px;
  height:100px;
  background:#444;
  margin-bottom:10px;
}

.box1 {
  width:100px;
  height:100px;
  background:#88ce02;
}

.box2 {
  width:100px;
  height:100px;
  background:red;
}

.box3 {
  width:100px;
  height:100px;
  background:blue;
}

button {
  margin:10px 0;
  padding:10px;
}
              
            
!

JS

              
                var endX = 300;
var box1 = $(".box1");
var box2 = $(".box2");
var box3 = $(".box3");

//var tween = TweenLite.to(box, 2, {x:endX, ease:Linear.easeNone}).reverse();
var animations = {
   
  a1: function(){
      var t1 = new TimelineMax({ });   
      t1.to(box1, 2, {x:endX, ease:Linear.easeNone}).reverse();
  },
  
  a2: function(){
      var t2 = new TimelineMax({ });   
      t2.to(box2, 2, {x:endX, ease:Linear.easeNone}).reverse();
  },
  
  a3: function(){
      var t3 = new TimelineMax({ });   
      t3.to(box3, 2, {x:endX, ease:Linear.easeNone}).reverse();
  }
  
}

//just trying to test here
//var test = animations.a1();
//test.reversed(!test.reversed());


//myAnimation.reversed( !myAnimation.reversed() ); 
//toggles the orientation

$('button').click(function(){  
  
  var next = $(this).attr("id");
 
  if(!--anytween--.isActive()){
    //only reverse the direction if the tween is not active
    //and only reverse if no other tween is occuring
  animations[next].reversed(!animations[next].reversed());
  }
  
  
});

/* from the API documentation

isActive() indicates whether or not the animation is currently active (meaning the virtual playhead is actively moving across this instance's time span and it is not paused, nor are any of its ancestor timelines). So for example, if a tween is in the middle of tweening, it's active, but after it is finished (or before it begins), it is not active. If it is paused or if it is placed inside of a timeline that's paused (or if any of its ancestor timelines are paused), isActive() will return false. If the playhead is directly on top of the animation's start time (even if it hasn't rendered quite yet), that counts as "active".

https://greensock.com/docs/#/HTML5/GSAP/TweenLite/isActive/

*/
              
            
!
999px

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