Browser Diet - jQuery.each vs. for loop (v8)

Revision 8 of this benchmark created on

Preparation HTML

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

Setup

function customForEach(array, callback, thisArg) {
      var fn = callback,
          index = -1,
          length = array.length;
    
      while (++index < length) {
        if (callback(array[index], index, array) === false) {
          break;
        }
      }
      return array;
    }

Test runner

Ready to run.

Testing in
TestOps/sec
jQuery.each
$.each(a, function() {
  e = this;
});
ready
for loop
for (var i = 0, len = a.length; i < len; i++) {
  e = a[i];
}
ready
for without caching
for (var i = 0; i < a.length; i++) {
  e = a[i];
}
ready
alternative for loop
for (var i in a) {
  e = a[i];
}
ready
reverse for
for (var i = a.length; i--;) {
  e = a[i];
}
ready
while reverse
var i = a.length;
while (i) {
  e = a[--i];
}
ready
customForEach
customForEach(a, function(v) {
  e = v;
});
ready

Revisions

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