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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:97.0) Gecko/20100101 Firefox/97.0

Browser: Firefox 97

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

Script Preparation code:

var array = new Array(100);
var alen = array.length;

Tests:

for
for (var i = 0; i < array.length; i++) { array[i]; }
foreach
array.forEach(function(i) { array[i]; });
for..of
for (var i of array) { array[i]; }
for with cached length
for (var i = 0, len = array.length; i < len; i++) { array[i]; }
for with pre-cached length
for (var i = 0; i < alen; i++) { array[i]; }