Run results for: Reading object values in loop: Object.keys vs Object.values

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 YaBrowser/18.9.0.3467 Yowser/2.5 Safari/537.36

Browser: Yandex Browser 18

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Object.keys	80.4 Ops/sec
Object.values	84.0 Ops/sec

Script Preparation code:

var obj = {};

for (let i = 0; i < 1000; i++) {
  obj['abc_' + i] = i;
}

Tests:

Object.keys
const keys = Object.keys(obj); keys.forEach(function(key, value) { console.log(obj[key]); });
Object.values
const values = Object.values(obj); values.forEach(function(key, value) { console.log(value); });