Benchmark: for vs for backwards vs for each vs some vs for..of

Script Preparation code:

var array = new Array(100);

Tests:

for
const len = array.length; for (var i = 0; i < len; i++) { array[i]; }
foreach
array.forEach(function(i) { array[i]; });
some
array.some(function(i) { array[i]; });
for..of
for (var i of array) { array[i]; }
for backwards
for (var i = array.length; i >= 0; i--) { array[i]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for
foreach
some
for..of
for backwards

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser/OS: Chrome 141 on Mac OS X 10.15.7

View result in a separate tab

foreach

11.3M/s

some

11.1M/s

for

9.6M/s

for backwards

9.4M/s

for..of

1.8M/s

View exact numbers

Test name	Executions per second
✓ foreach	11,342,826 Ops/sec
some	11,053,922 Ops/sec
for	9,581,017 Ops/sec
for backwards	9,403,799 Ops/sec
for..of	1,818,913 Ops/sec

for vs for backwards vs for each vs some vs for..of (version: 1)

Compare loop performance

Comparing performance of: `for vs foreach vs some vs for..of vs for backwards`

Created: 9 months ago by: Guest

Go to the latest result

for

foreach

some

for..of

for backwards

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

for vs for backwards vs for each vs some vs for..of (version: 1)

Compare loop performance

Comparing performance of: for vs foreach vs some vs for..of vs for backwards

Created: 9 months ago by: Guest

Go to the latest result

for

foreach

some

for..of

for backwards

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `for vs foreach vs some vs for..of vs for backwards`