The arguments object (v10)

Revision 10 of this benchmark created on

Description

How slow is the use of arguments?

Preparation HTML

<script>
  function a(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) {
    if (arg4 === undefined) {
      return [arguments[0], arguments[1], arguments[2], arguments[3], arguments[4], arguments[5], arguments[6], arguments[7], arguments[8], arguments[9]];
    }
    return [arguments[0], arguments[1], arguments[2], arguments[3], arguments[4], arguments[5], arguments[6], arguments[7], arguments[8], arguments[9]];
  }

  function b(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) {
    if (arg4 === undefined) {
      return [arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9];
    }
    return [arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9];
  }

  function c(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) {
    if (arg4 === undefined) {
      return [arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9];
    }
    return [arguments[0], arguments[1], arguments[2], arguments[3], arguments[4], arguments[5], arguments[6], arguments[7], arguments[8], arguments[9]];
  }
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
arguments object, accessing individual args
a('foo', 'bar', 42);
ready
Regular arguments
b('foo', 'bar', 42);
ready
Regular arguments (arguments accessed in dead code)
c('foo', 'bar', 42);
ready

Revisions

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