Run results for: for/for each/forEach - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:72.0) Gecko/20100101 Firefox/72.0

Browser: Firefox 72

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
for	1888399.0 Ops/sec
for each	114299200.0 Ops/sec
forEach	9400555.0 Ops/sec

Website performance monitoring

Script Preparation code:

var array = new Array(100);

Tests:

for
for (var i = 0; i < array.length; i++) { array[i]; }
for each
for (var item in array) { item; }
forEach
array.forEach(function(item, index) { return item; });