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Array slice vs for loop vs spread (new Array)
(version: 1)
Comparing performance of:
slice vs push vs Spread
Created:
one year ago
by:
Guest
Jump to the latest result
Script Preparation code:
const data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0];
Tests:
slice
const copy = data.slice(0, 5);
push
const copy = new Array(5); for (let i = 0; i < 5; i++) { copy[i] = data[i]; }
Spread
const copy = [...data]
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
slice
push
Spread
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
3 months ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.2 Safari/605.1.15
Browser/OS:
Safari 26 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=624787" width="100%" height="500px"></iframe>
Test name
Executions per second
slice
149744832.0 Ops/sec
push
314624832.0 Ops/sec
Spread
71954904.0 Ops/sec
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Array slice vs for loop
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Array slice vs for loop 1000 elements
Array slice vs for loop (set by index)
Array slice vs for loop (set by index in new Array)
Array slice vs for loop (new Array)
Array slice vs for loop (2)
array clone variants
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