Run results for: for (cache length) vs foreach vs for..in vs for..of

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 128

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

foreach

928K/s

for

812K/s

for in

803K/s

for..of

152K/s

View exact numbers

Script Preparation code:

var array = new Array(100);

Tests:

for
var arrLength = array.length; for (var i = 0; i < arrLength; 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]; }