Run results for: for vs foreach vs for..in vs for..of (small array)

Run details:

User agent: Mozilla/5.0 (X11; CrOS x86_64 14541.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Chrome OS 14541.0.0

Device Platform: Desktop

Date tested: one year ago

for (cache length

16.2M/s

for

15.4M/s

foreach

14.5M/s

for..of

9.3M/s

for in

3.3M/s

View exact numbers

Script Preparation code:

var array = new Array(1);

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]; }
for (cache length
const length = array.length for (var i = 0; i < length; i++) { array[i]; }