Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Chrome 123
Windows
Desktop
9 months ago
Test name Executions per second
undefined 9701865.0 Ops/sec
typeof 27208798.0 Ops/sec
in 27459018.0 Ops/sec
hasOwnProperty 24771064.0 Ops/sec
bool 27118220.0 Ops/sec
Script Preparation code:
Tests:
  • undefined

  • typeof

  • in

  • hasOwnProperty

  • bool