Run results for: for w/length constant vs foreach vs some vs for..of - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36 OPR/102.0.0.0

Browser: Opera 102

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
for	282522.0 Ops/sec
foreach with operation	9772201.0 Ops/sec
some	9422836.0 Ops/sec
for..of	248991.7 Ops/sec

Script Preparation code:

var array = new Array(100);

Tests:

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

;