Run results for: Chunk - lodash vs javascript vs for loop vs reduce

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.0.0; SM-T820 Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.196 Safari/537.36 [FB_IAB/FB4A;FBAV/422.0.0.26.76;]

Browser: Chrome 114

Operating system: Android 8.0.0

Device Platform: Tablet

Date tested: one year ago

Test name	Executions per second
lodash	75.6 Ops/sec
native new	693.7 Ops/sec
native old	687.5 Ops/sec
native for loop	130.7 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var values = new Array(200 * 200 * 4)

Tests:

lodash
var chunks = _.chunk(values, 4)
native new
const chunk = (input, size) => { return input.reduce((arr, item, idx) => { if (idx % size === 0) { arr.push([item]); } else { arr[arr.length - 1].push(item); } return arr; }, []); } var chunks = chunk(values, 4)
native old
const chunk = (input, size) => { return input.reduce((arr, item, idx) => { return idx % size === 0 ? [...arr, [item]] : [...arr.slice(0, -1), [...arr.slice(-1)[0], item]]; }, []); } var chunks = chunk(values, 4)
native for loop
const chunk = (input, size) => { const arr = []; for (let i = 0; i < input.length; i += size) { arr.push(input.slice(i, i + size)); } return arr; }; var chunks = chunk(values, 4)

Run results for: Chunk - lodash vs javascript vs for loop vs reduce

lodash

native new

native old

native for loop