Run results for: Concat vs Spread (Two Arrays)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36

Browser: Chrome 139

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

spread operator

38.5M/s

concat into empty array

13.8M/s

View exact numbers

Test name	Executions per second
✓ spread operator	38,492,340 Ops/sec
concat into empty array	13,796,088 Ops/sec

Script Preparation code:

var array1 = [ "hella", true, 7 ]
var array2 = ["hallo", false, 5];

Tests: