Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36
Chrome 107
Mac OS X 10.15.7
Desktop
2 years ago
Test name Executions per second
Instanceof if 5494472.0 Ops/sec
isArray if 5395938.0 Ops/sec
Length if 8324989.5 Ops/sec
Length if undef 5432592.0 Ops/sec
Map if 8486778.0 Ops/sec
Ctor check 5373641.0 Ops/sec
Script Preparation code:
Tests:
  • Instanceof if

  • isArray if

  • Length if

  • Length if undef

  • Map if

  • Ctor check