Run results for: Battle of the JavaScript Loops

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
✓ for in	65,245,128 Ops/sec
for (with defined iterator and iterator limit)	1,143,474 Ops/sec
while	1,124,730 Ops/sec
while (with defined iterator limit)	1,098,405 Ops/sec
for (with defined iterator)	1,095,748 Ops/sec
do while (with defined iterator limit)	1,093,442 Ops/sec
for	1,090,847 Ops/sec
do while	824,391 Ops/sec
forEach	658,592 Ops/sec
for of	146,461 Ops/sec

Test name

Executions per second

✓ for in

65,245,128 Ops/sec

for (with defined iterator and iterator limit)

1,143,474 Ops/sec

while

1,124,730 Ops/sec

while (with defined iterator limit)

1,098,405 Ops/sec

for (with defined iterator)

1,095,748 Ops/sec

do while (with defined iterator limit)

1,093,442 Ops/sec

for

1,090,847 Ops/sec

do while

824,391 Ops/sec

forEach

658,592 Ops/sec

for of

146,461 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; }