Benchmark: forEach vs reduce vs map vs filter vs for

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;

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 += arr[j]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
forEach
reduce
map
filter
for

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 20 hours ago)

User agent: Mozilla/5.0 (Android 12; Mobile; rv:128.0) Gecko/128.0 Firefox/128.0

Browser/OS: Firefox Mobile 128 on Android

View result in a separate tab

Test name	Executions per second
forEach	1980.1 Ops/sec
reduce	1848.6 Ops/sec
map	1723.5 Ops/sec
filter	1556.0 Ops/sec
for	2285.2 Ops/sec

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

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

Created: 6 years ago by: Guest

Jump to the latest result

forEach

reduce

map

filter

for

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A