Run results for: for vs foreach vs some vs for..in - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.122 Safari/537.36

Browser: Chrome 81

Operating system: Windows 7

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
for	9737.2 Ops/sec
foreach	397978.8 Ops/sec
for..in	378319.9 Ops/sec
for ..of	14231.5 Ops/sec

Website performance monitoring

Script Preparation code:

var array = new Array(100);

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]; }