translate3d vs translate XY vs css left/top vs scrollleft

JavaScript performance comparison

Revision 37 of this test case created

Preparation code

<div id="elem" style="position: absolute; background:#ccc; width:10px; height:10px;"></div>
<script>
  var elem = document.getElementById("elem");
  var style = elem.style;
</script>

<div id="elem2" style="overflow:scroll;width:300px;height:300px;"></div>
<script>
  var elem2 = document.getElementById("elem2");
</script>
 

Preparation code output

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Testing in unknown unknown
Test Ops/sec
translate3d
 
var x = y = 0;
for (var i = 100; i--;) {
 x = i;
 y = i * 5;

 style.WebkitTransform = 'translate3d(' + x + 'px, ' + y + 'px, 0)';

}
 pending…
translateX/Y
 
var x = y = 0;
for (var i = 100; i--;) {
 x = i;
 y = i * 5;

 style.WebkitTransform = 'translateX(' + x + 'px) translateY(' + y + 'px)';

}
 pending…
css left/top
 
var x = y = 0;
for (var i = 100; i--;) {
 x = i;
 y = i * 5;
 style.left = x + 'px';
 style.top = y + 'px';
}
 pending…
Scroll left
 
var x = y = 0;
for (var i = 100; i--;) {
 x = i;
 y = i * 5;
 elem2.scrollLeft = x + 'px';
 elem2.scrollTop = y + 'px';
}
 pending…

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