Run results for: Battle of the JavaScript Loops

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0

Browser: Firefox 132

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
✓ for in	63,762,584 Ops/sec
for (with defined iterator and iterator limit)	1,305,879 Ops/sec
while (with defined iterator limit)	1,302,924 Ops/sec
while	1,301,795 Ops/sec
for	1,277,126 Ops/sec
do while	1,131,534 Ops/sec
do while (with defined iterator limit)	1,111,609 Ops/sec
for (with defined iterator)	974,951 Ops/sec
forEach	964,478 Ops/sec
for of	139,566 Ops/sec

Test name

Executions per second

✓ for in

63,762,584 Ops/sec

for (with defined iterator and iterator limit)

1,305,879 Ops/sec

while (with defined iterator limit)

1,302,924 Ops/sec

while

1,301,795 Ops/sec

for

1,277,126 Ops/sec

do while

1,131,534 Ops/sec

do while (with defined iterator limit)

1,111,609 Ops/sec

for (with defined iterator)

974,951 Ops/sec

forEach

964,478 Ops/sec

for of

139,566 Ops/sec

Tests:

for
for (var i = 0; i < array.length; i += 1) { array[i]; }
for (with defined iterator)
var i = 0; for (i; i < array.length; i += 1) { array[i]; }
for (with defined iterator and iterator limit)
var i = 0; var arrayLength = array.length; for (i; i < arrayLength; i += 1) { array[i]; }
for of
for (var i of array) { array[i]; }
for in
for (var i in array) { array[i]; }
forEach
array.forEach(function(i) { array[i]; });
do while
var i = 0; do { array[i]; i += 1; } while (i < array.length);
do while (with defined iterator limit)
var i = 0; var arrayLength = array.length; do { array[i]; i += 1; } while (i < arrayLength);
while
var i = 0; while (i < array.length) { array[i]; i += 1; }
while (with defined iterator limit)
var i = 0; var arrayLength = array.length; while (i < arrayLength) { array[i]; i += 1; }