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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.4.1

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

foreach

589K/s

some

576K/s

every

572K/s

map

541K/s

for

179K/s

for..of

179K/s

View exact numbers

Test name	Executions per second
✓ foreach	589,288 Ops/sec
some	576,272 Ops/sec
every	572,268 Ops/sec
map	541,342 Ops/sec
for	179,455 Ops/sec
for..of	179,151 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);

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

Compare loop performance

for

foreach

some

every

for..of

map