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for vs foreach vs for..in vs for..of (updated)
(version: 1)
Compare loop performance
Comparing performance of:
for vs foreach vs for in vs for..of
Created:
one year ago
by:
Guest
Jump to the latest result
Script Preparation code:
const array = new Array(100);
Tests:
for
const LENGTH = array.length; for (let i = 0; i < LENGTH; i++) { array[i] = Math.random(); }
foreach
array.forEach(function(i) { array[i] = Math.random(); });
for in
for (let i in array) { array[i] = Math.random(); }
for..of
for (let i of array) { array[i] = Math.random(); }
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:
5 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; rv:109.0) Gecko/20100101 Firefox/115.0
Browser/OS:
Firefox 115 on Windows
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Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=622022" width="100%" height="500px"></iframe>
Test name
Executions per second
for
778740.6 Ops/sec
foreach
23551.7 Ops/sec
for in
35754.4 Ops/sec
for..of
24240.3 Ops/sec
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for vs foreach vs for..in vs for..of (Fixed)
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