Benchmark: for vs foreach vs for..in vs for..of (without broken array accesses)

Script Preparation code:

var array = new Array(100);

Tests:

for
for (var i = 0; i < array.length; i++) { array[i]; }
foreach
array.forEach(function(i) { i; });
for in
for (var i in array) { array[i]; }
for..of
for (var i of array) { i; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for
foreach
for in
for..of

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.5 Safari/605.1.15

Browser/OS: Safari 18 on Mac OS X 10.15.7

View result in a separate tab

for

26.6M/s

for in

10.7M/s

for..of

8.6M/s

foreach

671K/s

View exact numbers

Test name	Executions per second
✓ for	26,581,338 Ops/sec
for in	10,667,954 Ops/sec
for..of	8,558,130 Ops/sec
foreach	671,454 Ops/sec

for vs foreach vs for..in vs for..of (without broken array accesses) (version: 1)

Compare loop performance

Comparing performance of: `for vs foreach vs for in vs for..of`

Created: one year ago by: Guest

Go to the latest result

for

foreach

for in

for..of

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

for vs foreach vs for..in vs for..of (without broken array accesses) (version: 1)

Compare loop performance

Comparing performance of: for vs foreach vs for in vs for..of

Created: one year ago by: Guest

Go to the latest result

for

foreach

for in

for..of

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `for vs foreach vs for in vs for..of`