Variable outside faster (v3)

Revision 3 of this benchmark created on

Description

Check whether declaring a variable outside or inside a loop is faster.

Preparation HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<div class=copy>
</div>
<div class=copy>
</div>
<div class=copy>
</div>
<div class=copy>
</div>
<div class=copy>
</div>
<div class=copy>
</div>
<div class=copy>
</div>
<div class=copy>
</div>
<div class=copy>
</div>
<div class=copy>
</div>
<div class=copy>
</div>
<div class=copy>
</div>

Test runner

Ready to run.

Testing in
TestOps/sec
inside
(function() {
  $('.copy').each(function() {
    var i = $(this).clone().removeClass('copy');
    $('body').append(i);
  });
})();
ready
outside
(function() {
  var i = null;
  $('.copy').each(function() {
    i = $(this).clone().removeClass('copy');
    $('body').append(i);
  });
})();
ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.