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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/119.0

Browser: Firefox 119

Operating system: Linux

Device Platform: Desktop

Date tested: 11 months ago

Test name	Executions per second
Array.push in for loop	42739.7 Ops/sec
Spread operator	5290.9 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] }