Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36
Chrome 97
Windows
Desktop
2 years ago
Test name Executions per second
"!" syntax 257374.3 Ops/sec
object.property === undefined 253687.9 Ops/sec
Script Preparation code:
Tests:
  • "!" syntax

  • object.property === undefined