Run results for: for vs foreach vs some vs for..of vs for with cached length

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0

Browser: Firefox 140

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

for

20.7M/s

for with cached length

19.9M/s

some

12.6M/s

foreach

7.5M/s

for..of

1.4M/s

View exact numbers

Script Preparation code:

var array = new Array(100);

Tests:

for
for (var i = 0; i < array.length; i += 1) { 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 with cached length
for (var i = 0, end = array.length; i < end; i += 1) { array[i]; }