Run results for: isArray vs length

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36 Edg/126.0.0.0

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Array.isArray

7.5M/s

Check object.length

6.4M/s

View exact numbers

Test name	Executions per second
✓ Array.isArray	7,480,168 Ops/sec
Check object.length	6,444,675 Ops/sec

Script Preparation code:

function myIsArray(obj){
  return obj.length > 0;
}

var isArray = Array.isArray

Tests: