Underscore.each vs jQuery.each vs. for loop vs. forEach (v251)

Revision 251 of this benchmark created on

Preparation HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<script src="//documentcloud.github.com/underscore/underscore-min.js">
</script>
<script>
  var pi = Math.PI
  var a = new Array(1000),
      e;
function addit() {e+=pi};
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
jQuery.each
$.each(a, function() {
  e += pi;
});
ready
good old for loop
for (var i = 0, len = a.length; i < len; i++) {
  e += pi;
};
ready
underscore.each
_.each(a, function() {
  e += pi;
});
ready
good old for loop (decrementing)
var i = a.length;
for (; i > 0; i--) {
  e += pi;
};
ready
forEach
a.forEach(function() {
  e += pi;
})
ready
map?
a.map(function() {
  e += pi;
})
ready
for function
var i = a.length;
for (; i > 0; i--) {
  addit();
};
ready

Revisions

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