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for vs foreach vs for..in vs for..of (Fixed)
(version: 1)
Compare loop performance
Comparing performance of:
for vs foreach vs for in vs for..of
Created:
one year ago
by:
Guest
Go to the latest result
Script Preparation code:
var array = new Array(100);
Tests:
for
for (let i = 0, len = array.length; i < len; i++) { array[i]; }
foreach
array.forEach(function(i) { i; });
for in
for (let i in array) { array[i]; }
for..of
for (let i of array) { i; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
Fork
Test case name
Result
for
foreach
for in
for..of
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
4 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:150.0) Gecko/20100101 Firefox/150.0
Browser/OS:
Firefox 150 on Windows
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=627041" width="100%" height="500px"></iframe>
for in
124.5M/s
for
47.7M/s
foreach
16.9M/s
for..of
4.2M/s
View exact numbers
Test name
Executions per second
✓
for in
124,533,096 Ops/sec
for
47,702,836 Ops/sec
foreach
16,888,736 Ops/sec
for..of
4,205,926 Ops/sec
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Comments
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