Benchmark: lodash map vs filter vs reduce vs for each

HTML Preparation code:

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

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:

map
_.map(arr, (item) => sumMap += someFn(item));
filter
_.filter(arr, (item) => (sumFilter += someFn(item)));
foreach
_.forEach(arr, (item) => sumForEach += someFn(item));
reduce
_.reduce(arr, (lastValue, item) => { return sumReduce += someFn(item); });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
map
filter
foreach
reduce

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.134 Safari/537.36 Edg/103.0.1264.71

Browser/OS: Chrome 103 on Windows

View result in a separate tab

Test name	Executions per second
map	315.6 Ops/sec
filter	312.5 Ops/sec
foreach	319.3 Ops/sec
reduce	326.2 Ops/sec

lodash map vs filter vs reduce vs for each (version: 0)

Comparing performance of: map vs filter vs foreach vs reduce

Created: 4 years ago by: Registered User

Jump to the latest result

map

filter

foreach

reduce

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A