Run results for: map-reduce-loop

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_0_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.67 Safari/537.36 Edg/87.0.664.47

Browser: Chrome 87

Operating system: Mac OS X 11.0.1

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
map-reduce	44811.0 Ops/sec
loop	45325.1 Ops/sec

Script Preparation code:

window.cols = Array.from({length: 20}).map(() => ({ style: { width: '123px' }}))

Tests:

map-reduce
const sum = cols .map(c => parseFloat(c.style.width)) .reduce((a, b) => a + b); console.log(sum)
loop
let sum = 0 for (const c of cols) { sum += parseFloat(c.style.width) } console.log(sum)