Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36
Chrome 121
Mac OS X 10.15.7
Desktop
11 months ago
Test name Executions per second
Instanceof 3728069.2 Ops/sec
isArray 3692081.8 Ops/sec
Script Preparation code:
AخA
 
var test = [1,2,3,4];
var c;
Tests:
  • Instanceof

     
    if (test instanceof Array) { c++; }
  • isArray

     
    if (Array.isArray(test)) { c++; }