Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:86.0) Gecko/20100101 Firefox/86.0
Firefox 86
Mac OS X 10.16
Desktop
3 years ago
Test name Executions per second
undefined 974426240.0 Ops/sec
typeof 973728320.0 Ops/sec
in 973723072.0 Ops/sec
hasOwnProperty 973007808.0 Ops/sec
bool 971719808.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool