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for vs foreach vs for..in vs for..of jul 2025
(version: 1)
Compare loop performance
Comparing performance of:
for vs foreach vs for in vs for..of
Created:
9 months ago
by:
Guest
Jump to the latest result
Script Preparation code:
var array = new Array(1000);
Tests:
for
for (var i = 0; i < array.length; i++) { var x = array[i]; }
foreach
array.forEach((el)=> { var e = el; });
for in
for (var el in array) { var e = el; }
for..of
for (var el of array) { var e = el; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
for
foreach
for in
for..of
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one month ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:148.0) Gecko/20100101 Firefox/148.0
Browser/OS:
Firefox 148 on Linux
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=626886" width="100%" height="500px"></iframe>
Test name
Executions per second
for
1920499.2 Ops/sec
foreach
833871.2 Ops/sec
for in
80563456.0 Ops/sec
for..of
334643.2 Ops/sec
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