Run details:
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.75 Safari/537.36
Chrome 68
Windows 7
Desktop
3 years ago
Test name Executions per second
!variable 7731181.5 Ops/sec
variable===undefined 2322660.8 Ops/sec
Script Preparation code:
Tests:
  • !variable

  • variable===undefined