Run results for: Chunk array generator(slice) vs slice vs for loop

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:146.0) Gecko/20100101 Firefox/146.0

Browser: Firefox 146

Operating system: Windows

Device Platform: Desktop

Date tested: 9 months ago

Benchmark engine: Benchmark.js

generator (slice)

757.9M/s

slice

23K/s

push

22K/s

View exact numbers

Script Preparation code:

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

Tests:

slice
let chunksize = 10; let pos = 0; let chunk = []; while (pos <= data.length) { chunk = data.slice(pos, pos + chunksize); console.log(chunk); pos = pos + chunksize; }
push
let chunksize = 10; let pos = 0; let chunk = []; for (let pos = 0; pos <= data.length; pos++) { chunk.push(data[pos]); if (pos % chunksize === 0 || pos === data.length) { console.log(chunk); chunk = []; } }
generator (slice)
function* getBatch(records, currentPos = 0, chunksize = 10) { let pos = 0; while (pos <= records.length) { yield records.slice(pos, pos + chunksize); pos = pos + chunksize; } }