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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36

Browser: Chrome 89

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
for native	13064.0 Ops/sec
for	6686.1 Ops/sec
forEach	437948.7 Ops/sec
some	449683.2 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]; });