Benchmark: Array loop: forEach vs for vs map vs for of entries with larger array

Script Preparation code:

   var arr = [];
    for (var i = 0; i < 100_000; i++) {
      arr[i] = i;
    }
  
    function someFn(x, i) {
      return x * i * 3 * 8;
    }

Tests:

forEach
arr.forEach(someFn)
for
for (var i = 0, len = arr.length; i < len; i++) { someFn(arr[i], i); }
map
arr.map(someFn)
for of entries
for (const [x, i] of arr.entries()) { someFn(x, i); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
forEach
for
map
for of entries

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser/OS: Chrome 141 on Windows

View result in a separate tab

Test name	Executions per second
forEach	11169.3 Ops/sec
for	5138.6 Ops/sec
map	810.0 Ops/sec
for of entries	2105.0 Ops/sec

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Array loop: forEach vs for vs map vs for of entries
Array loop vs foreach vs map with large array
Array loop vs foreach simplified
Array loop vs for of loop vs foreach vs map fixed

Array loop: forEach vs for vs map vs for of entries with larger array (version: 1)

Comparing performance of: forEach vs for vs map vs for of entries

Created: 6 months ago by: Guest

Jump to the latest result

forEach

for

map

for of entries

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A