Benchmark: forEach vs reduce vs map vs filter vs for vs for of

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 sumForEach = 0,
  sumReduce = 0,
  sumMap = 0,
  sumFilter = 0,
  sumFor = 0,
  sumForOf = 0;

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
forEach
reduce
map
filter
for
forOf

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36

Browser/OS: Chrome 84 on Mac OS X 10.15.5

View result in a separate tab

Test name	Executions per second
forEach	312.9 Ops/sec
reduce	303.4 Ops/sec
map	299.2 Ops/sec
filter	299.9 Ops/sec
for	214.1 Ops/sec
forOf	252.4 Ops/sec

forEach vs reduce vs map vs filter vs for vs for of (version: 0)

Comparing performance of: forEach vs reduce vs map vs filter vs for vs forOf

Created: 4 years ago by: Guest

Jump to the latest result

forEach

reduce

map

filter

for

forOf

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A