Benchmark: for vs foreach vs some vs for..of without browser optim - MeasureThat.net

Script Preparation code:

var array = new Array(100).fill(1);

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for
foreach
some
for..of
for..in

Fastest: N/A

Slowest: N/A

ⓘ Get performance results from real users on your website with Request Metrics.

Website Performance Monitoring by Request Metrics

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36

Browser/OS: Chrome 108 on Windows

View result in a separate tab

Test name	Executions per second
for	81707.1 Ops/sec
foreach	137400.7 Ops/sec
some	129436.2 Ops/sec
for..of	150993.7 Ops/sec
for..in	109593.5 Ops/sec