9 The four squares should make identical rotations at different rates without jumping.
10 <div id="target1"></div>
11 <div id="target2"></div>
12 <div id="target3"></div>
13 <div id="target4"></div>
15 var player1 = target1.animate([
17 {transform: 'rotate(90deg)'}
18 ], {duration: 1000, iterations: 200000});
20 var player2 = target2.animate([
21 {transform: 'none', background: 'blue'},
22 {transform: 'rotate(90deg)', background: 'blue'}
23 ], {duration: 1000, iterations: 200000});
25 var player3 = target3.animate([
27 {transform: 'rotate(90deg)'}
28 ], {duration: 1000, iterations: Infinity});
30 var player4 = target4.animate([
31 {transform: 'none', background: 'blue'},
32 {transform: 'rotate(90deg)', background: 'blue'}
33 ], {duration: 1000, iterations: Infinity});
35 setInterval(function() {
36 var playbackRate = (Math.random() - 0.5) * 5;
37 player1.playbackRate = playbackRate;
38 player2.playbackRate = playbackRate;
39 player3.playbackRate = playbackRate;
40 player4.playbackRate = playbackRate;