Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Chrome 131
Windows
Desktop
2 months ago
Test name Executions per second
new Array() 226192.2 Ops/sec
Array.from() 59619.7 Ops/sec
[...Array()] 222028.4 Ops/sec
Script Preparation code:
AخA
 
var mapfn = (_, index) => {
    return index * 2 % 10;
}
Tests:
  • new Array()

     
    new Array(500).fill(500).map(mapfn)
  • Array.from()

     
    Array.from({ length: 500 }, mapfn)
  • [...Array()]

     
    [...Array(500)].map(mapfn)