Underscore.each vs jQuery.each vs. for loop vs. nimble-foreach

JavaScript performance comparison

Revision 207 of this test case created

Preparation code

<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,
      a = "t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t".split(","),
      e;
</script>

Preparation code output

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in unknown unknown
Test Ops/sec
jQuery.each
 
$.each(a, function(index, val) {
  val = pi;
});
 pending…
good old for loop
 
for (var i = 0, len = a.length; i < len; i++) {
  a[i] = pi;
};
 pending…
underscore.each
 
_.each(a, function(item) {
  item = pi;
});
 pending…
do loop
 
var i = 0,
    len = a.length;
do {
  a[i] = pi;
} while (i++ < len);
 pending…
foreach loop
 
for(var item in a) {
  a = pi;
}
 pending…

Compare results of other browsers

Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

0 comments

Add a comment