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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 LightSpeed [FBAN/MessengerLiteForiOS;FBAV/339.0.0.18.118;FBBV/332337725;FBDV/iPhone12,1;FBMD/iPhone;FBSN/iOS;FBSV/15.1;FBSS/2;FBCR/;FBID/phone;FBLC/fr;FBOP/0]

Browser: Mobile Safari 15

Operating system: iOS 15.1

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
for	96321.3 Ops/sec
foreach	304075.4 Ops/sec
some	6467510.0 Ops/sec
for..of	104800.3 Ops/sec

Script Preparation code:

var array = new Array(100);

AخA
 
var array = new Array(100);

Tests:

for

for (var i = 0; i < array.length; i++) {
  array[i];
}

 
for (var i = 0; i < array.length; i++) {  array[i];}

foreach
array.forEach(function(i) { array[i]; });
array.forEach(function(i) {
array[i];
});
some
array.some(function(i) { array[i]; });
array.some(function(i) {
array[i];
});
for..of
for (var i of array) { array[i]; }
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