Run results for: assphinxtersayswhatsuk

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

forEach

649/s

reduce

559/s

map

523/s

filter

435/s

forOf

338/s

for

241/s

View exact numbers

Test name	Executions per second
✓ forEach	649 Ops/sec
reduce	559 Ops/sec
map	523 Ops/sec
filter	435 Ops/sec
forOf	338 Ops/sec
for	241 Ops/sec

Script Preparation code:

var arr = [];
for (var i = 0; i < 12345; i++) {
  arr[i] = i;
}

function someFn(i) {
  return (i * 3 * 8 / 1200 * 0.002 / 40 * 0.2);
}

var sum = 0;

Tests:

forEach
arr.forEach(item => sum += someFn(item));
reduce
sumReduce = arr.reduce((lastValue, item) => { return sum += someFn(item); });
map
arr.map(item => (sum += someFn(item)));
filter
arr.filter(item => (sum += someFn(item)));
for
for (var j = 0; j < arr.length; j++) { sum += arr[j] + someFn(arr[j]); }
forOf
for (const num of arr) { sum += num + someFn(num); }