Run results for: Array.from length vs Array

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36 Edg/137.0.0.0

Browser: Chrome 137

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Array from sparse array

63K/s

Array.from length

3K/s

View exact numbers

Test name	Executions per second
✓ Array from sparse array	63,374 Ops/sec
Array.from length	3,063 Ops/sec

HTML Preparation code:

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Script Preparation code:

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async function globalMeasureThatScriptPrepareFunction() {
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    // await someThing();
}

Tests:

Array.from length
Array.from({length: 10000}, (_, i)=>i)
Array from sparse array
Array.from(Array(1000), (_, i)=>i)