jQuery.each vs. for loop

JavaScript performance comparison

Revision 110 of this test case created

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js">
</script>
<script>
  var a = $('*').get(),
      e;

  function fx(a) {
    e = a;
  }
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
jQuery.each
 
// async test
$.each(a, function() {
  e = this;
});
 pending…
for loop
 
// async test
for (var i = 0, len = a.length; i < len; i++) {
  e = a[i];
};
 pending…
while loop
 
var i = a.length - 1;

while (e = a[i--]) {};
 pending…
alternative for loop
 
for (var i in a) {
  e = a[i];
};
 pending…
reverse for
 
for (var i = a.length; i--;) {
  e = a[i]
}
 pending…
for with fn
 
for (var i = 0, len = a.length; i < len; i++) {
  fx(a[i]);
};
 pending…

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