Run results for: Benchmark: chunk array by slice VS splice

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36

Browser: Chrome 139

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

slice

133.1M/s

splice

28.0M/s

View exact numbers

Test name	Executions per second
✓ slice	133,138,392 Ops/sec
splice	28,028,128 Ops/sec

Script Preparation code:

const chunkSize = 100
const arr = [];
for (var i = 0; i < 10000; i++) {
  list.push(i);
}

Tests:

slice
const res = [] for (let i = 0; i < arr.length; i += chunkSize) { res.push(arr.slice(i, i + chunkSize)) }
splice
const res = [] while (arr.length > 0) { const chunk = arr.splice(0, chunkSize) res.push(chunk) }