Benchmark: for loop vs. .map but fast

Script Preparation code:

// Create sample data
var array = [1,2,3,4,5,6,7,8,9,0];

var manipulateFn = num => {
	return num * 2 * 3;
}

Tests:

.map
var newArray = array.map( i => manipulateFn(i));
for loop
var newArray = []; var length = array.length for (var i=0; i<length; i++) { newArray.push(manipulateFn(array[i])); }

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

.map

22.8M/s

for loop

14.3M/s

Fastest: .map (1.6x faster)

View exact numbers

✓ .map: 22,813,960 ops/sec
• for loop: 14,258,018 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
.map
for loop

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36

Browser/OS: Chrome 144 on Windows

View result in a separate tab

.map

19.4M/s

for loop

7.7M/s

View exact numbers

Test name	Executions per second
✓ .map	19,353,142 Ops/sec
for loop	7,670,426 Ops/sec

for loop vs. .map but fast (version: 1)

Comparing performance of: `.map vs for loop`

Created: one year ago by: Guest

Go to the latest result

.map

for loop

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

for loop vs. .map but fast (version: 1)

Comparing performance of: .map vs for loop

Created: one year ago by: Guest

Go to the latest result

.map

for loop

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `.map vs for loop`