Function call overhead (v5)

Revision 5 of this benchmark created on

Preparation HTML

<script>
  var test = [],
      limit = 100000;

  for (var i = 0; i < limit; i++) {
    test.push(Math.random());
  }


  function fun(num) {
    return test[num];
  }

  var o = {fun: fun};
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
Function call to loop
var test2 = 0;
var local = test;

for (var i = 0, n = test.length; i < n; i++) {
  test2 = local[i];
}
ready
Looped function calls
var test2 = 0;
var local = test;

for (var i = 0, n = test.length; i < n; i++) {
  test2 = fun(i);
}
 
ready
Looped function calls with caching
var test2 = 0;
var testFunc = fun;
var local = test;

for (var i = 0, n = test.length; i < n; i++) {
  test2 = testFunc(i);
}
ready
Looped function calls using call
var test2 = 0;
var local = test;

for (var i = 0, n = test.length; i < n; i++) {
  test2 = fun.call(undefined, i);
}
 
ready
ooped function calls using member
var test2 = 0;
var local = test;

for (var i = 0, n = test.length; i < n; i++) {
  test2 = o.fun(i);
}
 
ready

Revisions

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