Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36
Chrome 95
Windows
Desktop
3 years ago
Test name Executions per second
foreach 272196.0 Ops/sec
map 303860.8 Ops/sec
Tests:
  • foreach

    AخA
     
    let arr = Array(10000);
    arr.fill({name: 'ddd', age: 123});
    const newArr1 = []
    const newArr2 = []
    arr.forEach((v) => {
        newArr1.push(v.name)
        newArr2.push(v.age) 
    })
  • map

     
    let arr = Array(10000);
    arr.fill({name: 'ddd', age: 123});
    const newArr2 = []
    const newArr1 = arr.map((v) => {
        newArr2.push(v.age) 
        return v.name
    })