Run results for: array string for vs foreach vs for..in vs for..of

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

for

9.2M/s

foreach

5.6M/s

for..of

3.1M/s

for in

1.1M/s

View exact numbers

Test name	Executions per second
✓ for	9,212,680 Ops/sec
foreach	5,583,504 Ops/sec
for..of	3,050,932 Ops/sec
for in	1,146,756 Ops/sec

Script Preparation code:

var array = new Array('1','2','3','4','5','1','2','3','4','5','1','2','3','4','5','1','2','3','4','5','1','2','3','4','5','1','2','3','4','5','1','2','3','4','5','1','2','3','4','5',);

Tests:

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

Run results for: array string for vs foreach vs for..in vs for..of

Compare loop performance

for

foreach

for in

for..of