Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36
Chrome 80
Mac OS X 10.15.3
Desktop
4 years ago
Test name Executions per second
array find 34036104.0 Ops/sec
object index 821263040.0 Ops/sec
Tests:
  • array find

    x
     
    const arr = [{id:'A'}, {id:'B'}, {id:'C'}, {id:'D'}, {id:'E'}, {id:'F'}];
    const item = arr.find(i=>i.id === 'C')
  • object index

     
    const obj = {
        'A':{},
        'B':{},
        'C':{},
        'D':{},
        'E':{},
        'F':{}
    }
    const item = obj['C']