Benchmark: for vs foreach vs for..in vs for..of 100k

Script Preparation code:

var array = new Array(100000);

Tests:

for
for (var i = 0; i < array.length; i++) { array[i]; }
foreach
array.forEach(function(i) { array[i]; });
for in
for (var i in array) { array[i]; }
for..of
for (var i of array) { 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: 28 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0

Browser/OS: Firefox 152 on Windows

View result in a separate tab

for in

87.7M/s

for

21K/s

foreach

17K/s

for..of

2K/s

View exact numbers

Test name	Executions per second
✓ for in	87,745,472 Ops/sec
for	20,961 Ops/sec
foreach	16,701 Ops/sec
for..of	1,919 Ops/sec

for vs foreach vs for..in vs for..of 100k (version: 1)

Compare loop performance

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

Created: 28 days 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 100k (version: 1)

Compare loop performance

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

Created: 28 days 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`