Run results for: Array slice vs for loop (2)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

forEach

34.3M/s

slice

30.1M/s

for loop

13.0M/s

View exact numbers

Script Preparation code:

const data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0];

Tests:

slice
const copy = data.slice(3, 8) const copy2 = data.slice(0, 3)
for loop
const copy = []; const copy2 = []; for(let i = 0; i < data.length; i++) { if (i >=3 ) { copy.push(data[i]); } else { copy2.push(data[i]); }; };
forEach
const copy = []; const copy2 = []; data.forEach((el, i) => { if (i >=3 ) { copy.push(el); } else { copy2.push(el); }; });