Benchmark: Creating arrays with specified length

Script Preparation code:

var size = 15;

Tests:

Array Constructor
const array = new Array(size);
Array.from
const array = Array.from({length: size});
Setting length manually
const array = []; array.length = size;
Inserting a value in the last index
const array = []; array[size - 1] = undefined;

Rendered benchmark preparation results:

Previous results

Test case name	Result
Array Constructor
Array.from
Setting length manually
Inserting a value in the last index

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Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36

Browser/OS: Chrome 87 on Windows

Test name	Executions per second
Array Constructor	4008855.0 Ops/sec
Array.from	694161.4 Ops/sec
Setting length manually	4848291.0 Ops/sec
Inserting a value in the last index	3871615.0 Ops/sec

Creating arrays with specified length (version: 0)