i++ vs ++i, with and without caching

JavaScript performance comparison

Revision 111 of this test case created by Max Marshall

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<script>
  var a = $('*').get(),
      e;
</script>

    

Preparation code output

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
++i with caching
for (var i = 0, len = a.length; i < len; i++) { e = a[i]; }
pending…
i++ with caching
for (var i = 0, len = a.length; i < len; i++) { e = a[i]; }
pending…
++i without caching
for (var i = 0;; i < a.length; ++i) { e = a[i]; }
pending…
i++ without caching
for (var i = 0; i < a.length; i++) { e = a[i]; }
pending…

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