Run results for: Array isArray vs instanceof

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

isArray

19.7M/s

Instanceof

19.5M/s

View exact numbers

Test name	Executions per second
✓ isArray	19,729,838 Ops/sec
Instanceof	19,476,952 Ops/sec

Script Preparation code:

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

Tests: