Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:86.0) Gecko/20100101 Firefox/86.0
Firefox 86
Mac OS X 10.14
Desktop
3 years ago
Test name Executions per second
Array.isArray 75314472.0 Ops/sec
instanceof 56917436.0 Ops/sec
[].constructor 81480248.0 Ops/sec
Object.prototype.toString 20348586.0 Ops/sec
Script Preparation code:
Tests:
  • Array.isArray

  • instanceof

  • [].constructor

  • Object.prototype.toString