Run results for: for vs foreach vs some vs for..of 2 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36

Browser: Chrome 65

Operating system: Fedora

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
for	2287985.0 Ops/sec
foreach	10626060.0 Ops/sec
some	9163676.0 Ops/sec
for..of	3399087.0 Ops/sec

Website performance monitoring

Script Preparation code:

var array = new Array(2);

Tests:

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