Run results for: JavaScript V8 Array.push vs spread operator

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 YaBrowser/24.1.0.0 Safari/537.36

Browser: Yandex Browser 24

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Array.push in for loop	217683.2 Ops/sec
Spread operator	17626.4 Ops/sec

Tests:

Array.push in for loop
const arr1 = Array(1000).fill(0); const arr2 = Array(0); for (const el of arr1) { arr2.push(el) }
Spread operator
const arr1 = Array(10000).fill(0); let arr2 = Array(0); for (const el of arr1) { arr2 = [arr2, el] }