Run results for: for-in vs object.keys vs object.values for objects 2.0

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Object.values

691/s

for-in

265/s

Object.keys

204/s

View exact numbers

Test name	Executions per second
✓ Object.values	691 Ops/sec
for-in	265 Ops/sec
Object.keys	204 Ops/sec

Script Preparation code:

var obj = {
  'a': {
    id: 'a',
    num: 1
  },
  'b': {
    id: 'b',
    num: 1
  },
  'c': {
    id: 'c',
    num: 1
  },
  'd': {
    id: 'd',
    num: 1
  },
  'e': {
    id: 'e',
    num: 1
  },
  'f': {
    id: 'f',
    num: 1
  },
  'g': {
    id: 'g',
    num: 1
  },
};

Tests:

for-in
for (var i=10000; i > 0; i--) { let sum = 0; for (let key in obj) { sum += obj[key].num; } }
Object.keys
for (var i=10000; i > 0; i--) { let sum = 0; for (let key of Object.keys(obj)) { sum += obj[key].num; } }
Object.values
for (var i=10000; i > 0; i--) { let sum = 0; for (let value of Object.values(obj)) { sum += value.num; } }