Benchmark: Create Array Filled with Undefined - MeasureThat.net

Script Preparation code:

var length = 10000;

Tests:

Array.apply
const array = Array.apply(null, { length });
Array.concat
const array = [].concat.apply([], { length });
Array.fill
const array = []; array.length = length; array.fill(undefined);
Custom function
const func = (...args) => args; func.apply(null, { length });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.apply
Array.concat
Array.fill
Custom function

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36

Browser/OS: Chrome 102 on Windows

View result in a separate tab

Test name	Executions per second
Array.apply	3652.1 Ops/sec
Array.concat	3052.9 Ops/sec
Array.fill	36809.0 Ops/sec
Custom function	3946.3 Ops/sec