Run results for: Array isArray vs instanceof

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

isArray

4.4M/s

Instanceof

4.4M/s

View exact numbers

Test name	Executions per second
✓ isArray	4,427,989 Ops/sec
Instanceof	4,375,741 Ops/sec

Script Preparation code:

var test = [1,2,3,4];
var c;

Tests: