Run results for: for vs for..of vs forEach - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.106 Safari/537.36

Browser: Chrome 91

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
for native	13801.2 Ops/sec
for	7010.2 Ops/sec
forEach	525071.1 Ops/sec
some	521973.1 Ops/sec

Script Preparation code:

var array = new Array(1000);

Tests:

for native
for (var i = array.length - 1; i >= 0; i--) { array[i]; }
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]; });