Run results for: for vs foreach vs some vs every vs for..of vs map - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/117.0

Browser: Firefox 117

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
for	9635409.0 Ops/sec
foreach	5999460.0 Ops/sec
some	6027820.0 Ops/sec
every	5744166.0 Ops/sec
for..of	627216.4 Ops/sec
map	3554843.5 Ops/sec

Script Preparation code:

var array = new Array(100);

Tests:

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]; });
every
array.every(function(i) { array[i]; });
for..of
for (var i of array) { array[i]; }
map
array.map(a => a);