Benchmark: compare the ways to generate a random array for iteration

compare the ways to generate a random array for iteration (version: 0)

Tests:

Array.apply(null, Array(n))
Array.apply(null, Array(1000)).map(() => Math.random());
[...Array(n)]
[...Array(1000)].map(() => Math.random());
Array(n).fill(null)
Array(1000).fill(null).map(() => Math.random());
Array.from({ length: n })
Array.from({ length: 1000 }).map(() => Math.random());
Array.from({ length:n }, (item, i) => i)
Array.from({ length:1000 }, () => Math.random());

Rendered benchmark preparation results:

Previous results

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Windows

[...Array(n)]

11K/s

Array.apply(null, Array(n))

10K/s

Array(n).fill(null)

10K/s

Array.from({ length: n })

8K/s

Array.from({ length:n }, (item, i) => i)

7K/s

View exact numbers