Run results for: Array.filter vs Array.splice

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

Array.splice

500K/s

Array.filter

30K/s

View exact numbers

Test name	Executions per second
✓ Array.splice	500,060 Ops/sec
Array.filter	30,207 Ops/sec

Script Preparation code:

const array = Array.from({length: 10_000}, () => Math.floor(Math.random() * 10_000_000));
const indexToDelete = 7500;
const deleteCount = 500;

Tests:

Array.filter
const temp = [...array]; return temp.filter((x, i) => i < indexToDelete || i >= indexToDelete + deleteCount);
Array.splice
const temp = [...array]; temp.splice(indexToDelete, deleteCount); return temp;