Run results for: for vs foreach vs some vs for..of 1000 v0 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36

Browser: Chrome 83

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
foreach	464347.3 Ops/sec
for	4317.1 Ops/sec
for 2	8648.6 Ops/sec
for..of	7228.3 Ops/sec

Website performance monitoring

Script Preparation code:

var array = new Array(1000);

Tests:

foreach
array.forEach(function(i) { array[i]; });
for
for (var i = 0; i < array.length; i++) { array[i]; }
for 2
var length = array.length; for (var i = 0; i < length; i++) { array[i]; }
for..of
for (var i of array) { array[i]; }