Run results for: For in vs Object.*.forEach vs Object.values 2

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:127.0) Gecko/20100101 Firefox/127.0

Browser: Firefox 127

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 2 years ago

Object values

12K/s

For In

2K/s

Object keys for of

1K/s

View exact numbers

Script Preparation code:

var obj = new Object()
var keys = (new Array(10000)).fill(0).map((x, i) => { return i + 1 })
keys.forEach((x) => { obj['prop' + x] = x })

Tests:

For In
const arr = []; for (const key in obj) { arr.push(obj[key]); }
Object values
const arr = Object.values(obj);
Object keys for of
const arr = []; for (const key of Object.keys(obj)) { arr.push(obj[key]); }