Run results for: Array isArray vs instanceof

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0

Browser: Firefox 120

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

isArray

65.1M/s

Instanceof

63.5M/s

View exact numbers

Test name	Executions per second
✓ isArray	65,109,344 Ops/sec
Instanceof	63,481,236 Ops/sec

Script Preparation code:

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

Tests: