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Array loop vs foreach vs map vs for --
(version: 2)
Comparing performance of:
foreach vs for vs map vs for --
Created:
7 years ago
by:
Registered User
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Script Preparation code:
var arr = []; for (var i = 0; i < 1000; i++) { arr[i] = i; } function someFn(i) { return i * 3 * 8; }
Tests:
foreach
arr.forEach(function (item){ someFn(item); })
for
for (var i = 0, len = arr.length; i < len; i++) { someFn(arr[i]); }
map
arr.map(item => someFn(item))
for --
for (var len = arr.length - 1; len >= 0; len--) { someFn(arr[len]); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
foreach
for
map
for --
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
6 months ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Browser/OS:
Chrome 141 on Linux
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<iframe src="https://measurethat.net/Embed?id=620063" width="100%" height="500px"></iframe>
Test name
Executions per second
foreach
1029444.6 Ops/sec
for
213015.5 Ops/sec
map
167979.0 Ops/sec
for --
206887.2 Ops/sec
Related benchmarks:
Array loop vs foreach vs map (Small arrays)
Array loop: forEach vs for vs map vs for of entries
Array loop vs foreach vs map -2
Array loop vs foreach vs map with large array
Array loop vs for of loop vs foreach vs map fixed
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