Benchmark: Array.from({ length }) vs new Array()

HTML Preparation code:

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Script Preparation code:

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async function globalMeasureThatScriptPrepareFunction() {
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}

Tests:

Array.from({ length })
Array.from({ length: 10000000 })
new Array(length)
new Array(10000000)
Array.from({ length }) (index fill)
Array.from({ length: 10000000 }, (_, idx) => idx);
new Array(length) (index fill)
new Array(10000000).map((_, idx) => idx)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.from({ length })
new Array(length)
Array.from({ length }) (index fill)
new Array(length) (index fill)

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 29 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36 OPR/136.0.0.0 (Edition developer)

Browser/OS: Opera 136 on Windows

View result in a separate tab

new Array(length)

40/s

new Array(length) (index fill)

11/s

Array.from({ length }) (index fill)

2/s

Array.from({ length })

2/s

View exact numbers

Test name	Executions per second
✓ new Array(length)	40 Ops/sec
new Array(length) (index fill)	11 Ops/sec
Array.from({ length }) (index fill)	2 Ops/sec
Array.from({ length })	2 Ops/sec

Array.from({ length }) vs new Array() (version: 1) Benchmark.js

Comparing performance of: `Array.from({ length }) vs new Array(length) vs Array.from({ length }) (index fill) vs new Array(length) (index fill)`

Created: 29 days ago by: Guest

Go to the latest result

Array.from({ length })

new Array(length)

Array.from({ length }) (index fill)

new Array(length) (index fill)

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Array.from({ length }) vs new Array() (version: 1) Benchmark.js

Comparing performance of: Array.from({ length }) vs new Array(length) vs Array.from({ length }) (index fill) vs new Array(length) (index fill)

Created: 29 days ago by: Guest

Go to the latest result

Array.from({ length })

new Array(length)

Array.from({ length }) (index fill)

new Array(length) (index fill)

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Array.from({ length }) vs new Array(length) vs Array.from({ length }) (index fill) vs new Array(length) (index fill)`