Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0
Chrome 131
Windows
Desktop
4 months ago
Test name Executions per second
undefined 174378128.0 Ops/sec
typeof 195581664.0 Ops/sec
in 168991200.0 Ops/sec
hasOwnProperty 68192568.0 Ops/sec
bool 173273216.0 Ops/sec
keys 7644506.5 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool

  • keys