Run results for: Array isArray vs instanceof

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:138.0) Gecko/20100101 Firefox/138.0

Browser: Firefox 138

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

isArray

104.9M/s

Instanceof

100.6M/s

View exact numbers

Test name	Executions per second
✓ isArray	104,908,264 Ops/sec
Instanceof	100,617,504 Ops/sec

Script Preparation code:

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

Tests: