Benchmark: sum for vs foreach vs some vs for..of vs for with cached length

Script Preparation code:

var array = new Array(100);
for (let i = 0, end = array.length; i < end; i += 1) {
  array[i] = i;
}

Tests:

for
let sum = 0; for (var i = 0; i < array.length; i += 1) { sum += array[i]; }
foreach
let sum = 0; array.forEach(function(i) { sum += array[i]; });
some
let sum = 0; array.some(function(i) { sum += array[i]; });
for..of
let sum = 0; for (var i of array) { sum += array[i]; }
for with cached length
let sum = 0; for (var i = 0, end = array.length; i < end; i += 1) { sum += array[i]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for
foreach
some
for..of
for with cached length

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser/OS: Chrome 138 on Linux

View result in a separate tab

for with cached length

6.6M/s

for

4.9M/s

for..of

4.3M/s

foreach

3.8M/s

some

3.8M/s

View exact numbers

Test name	Executions per second
✓ for with cached length	6,645,368 Ops/sec
for	4,947,944 Ops/sec
for..of	4,279,566 Ops/sec
foreach	3,822,214 Ops/sec
some	3,799,700 Ops/sec

sum for vs foreach vs some vs for..of vs for with cached length (version: 1)

Compare loop performance doing summation

Comparing performance of: `for vs foreach vs some vs for..of vs for with cached length`

Created: one year ago by: Guest

Go to the latest result

for

foreach

some

for..of

for with cached length

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

sum for vs foreach vs some vs for..of vs for with cached length (version: 1)

Compare loop performance doing summation

Comparing performance of: for vs foreach vs some vs for..of vs for with cached length

Created: one year ago by: Guest

Go to the latest result

for

foreach

some

for..of

for with cached length

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 with cached length`