Benchmark: 3 different for loops vs foreach() vs some() (fixed)

Script Preparation code:

var array = [];
var i = 0;
for (; i < 1000; ++i) {
 	array[i] = 1;
}

Tests:

for (dynamic length)
var i = 0; for (; i < array.length; ++i) { array[i] = 1 - array[i]; }
foreach
array.forEach(function(num, i) { array[i] = 1 - num; });
some
array.some(function(num, i) { array[i] = 1 - num; });
for (static length)
var len = array.length var i = 0; for (; i < len; ++i) { array[i] = 1 - array[i]; }
backward for
var i = array.length - 1 for (; i >= 0; --i) { array[i] = 1 - array[i]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for (dynamic length)
foreach
some
for (static length)
backward for

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 11 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser/OS: Firefox 135 on Linux

View result in a separate tab

backward for

822K/s

for (static length)

776K/s

for (dynamic length)

762K/s

foreach

135K/s

some

132K/s

View exact numbers

Test name	Executions per second
✓ backward for	822,106 Ops/sec
for (static length)	775,639 Ops/sec
for (dynamic length)	761,703 Ops/sec
foreach	135,205 Ops/sec
some	131,714 Ops/sec

3 different for loops vs foreach() vs some() (fixed) (version: 1)

Compare loop performance

Comparing performance of: `for (dynamic length) vs foreach vs some vs for (static length) vs backward for`

Created: 11 months ago by: Guest

Go to the latest result

for (dynamic length)

foreach

some

for (static length)

backward for

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

3 different for loops vs foreach() vs some() (fixed) (version: 1)

Compare loop performance

Comparing performance of: for (dynamic length) vs foreach vs some vs for (static length) vs backward for

Created: 11 months ago by: Guest

Go to the latest result

for (dynamic length)

foreach

some

for (static length)

backward for

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `for (dynamic length) vs foreach vs some vs for (static length) vs backward for`