Run results for: Object keys vs Array map v2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2.1 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Array map (No console.log)

31K/s

Object keys (No console.log)

574/s

Array map

96/s

Object keys

83/s

View exact numbers

Test name	Executions per second
✓ Array map (No console.log)	30,771 Ops/sec
Object keys (No console.log)	574 Ops/sec
Array map	96 Ops/sec
Object keys	83 Ops/sec

Script Preparation code:

var obj = {}
var arr = []
for (var i = 0; i < 10000; i++) {
    let random = Math.floor(Math.random() * 10)
    obj[i] = {
        value: random
    };
    arr[i] = {
        value: random
    }
}

Tests:

Object keys
Object.keys(obj).map(key => console.log(obj[key].value))
Array map
arr.map(item => console.log(item.value))
Object keys (No console.log)
Object.keys(obj).map(key => obj[key].value)
Array map (No console.log)
arr.map(item => item.value)