Run results for: Array.filter vs Array.splice

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:145.0) Gecko/20100101 Firefox/145.0

Browser: Firefox 145

Operating system: Windows

Device Platform: Desktop

Date tested: 8 months ago

Array.splice

27K/s

Array.filter

12K/s

View exact numbers

Test name	Executions per second
✓ Array.splice	26,890 Ops/sec
Array.filter	11,958 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;