Run results for: Array isArray vs instanceof

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

isArray

99.5M/s

Instanceof

90.1M/s

View exact numbers

Test name	Executions per second
✓ isArray	99,455,696 Ops/sec
Instanceof	90,094,296 Ops/sec

Script Preparation code:

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

Tests: