jQuery.each vs. alternatives

JavaScript performance comparison

Revision 24 of this test case created by Addy Osmani

Info

Each comparisons

Preparation code

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

while (e = a[i--]) {
 $(e)
};
 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…
While 2
 
var i = a.length;
while (i--) {
 e = $(a[i]);
}
 pending…
jQuery.fn.each
 
$('*').each(function(i){
 e = $(this);
});
 pending…

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Revisions

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