Benchmark: Array.from vs native from

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

  function from1(ArrayLike, map, thisArg) {
      return 'length' in ArrayLike ? map ? [].map.call(ArrayLike, map, thisArg) : [].slice.call(ArrayLike) : map ? Array.from(ArrayLike, map, thisArg) : [...ArrayLike]
  }
let from2 = Array.from
let arr = Array.from({length:1e3},(a,i)=>i),
    set = new Set(arr),
    generic = {length: 1e3}

Tests:

Array.from
from2(arr) from2(set) from2(generic)
native from
from1(arr) from1(set) from1(generic)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.from
native from

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:141.0) Gecko/20100101 Firefox/141.0

Browser/OS: Firefox 141 on Windows

View result in a separate tab

Test name	Executions per second
Array.from	55712.6 Ops/sec
native from	129307.6 Ops/sec

Related benchmarks:

Array.from vs native from (version: 1)

Comparing performance of: Array.from vs native from

Created: 10 months ago by: Guest

Jump to the latest result

Array.from

native from

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A