Run results for: for vs foreach vs some vs for..of

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.3.2

Device Platform: Mobile

Date tested: one year ago

for

29.2M/s

foreach

903K/s

some

863K/s

for..of

575K/s

View exact numbers

Test name	Executions per second
✓ for	29,242,282 Ops/sec
foreach	902,504 Ops/sec
some	863,126 Ops/sec
for..of	574,969 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]; });
for..of
for (var i of array) { array[i]; }

Run results for: for vs foreach vs some vs for..of

Compare loop performance

for

foreach

some

for..of