Run results for: Object entry counting: Object.entries VS Object.keys VS Object.values

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5 Safari/605.1.15

Browser: Safari 16

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 9 months ago

Test name	Executions per second
Object.entries	188589.3 Ops/sec
Object.keys	448811.9 Ops/sec
Object.values	840091.8 Ops/sec

Script Preparation code:

function makeid() {
  var text = "";
  var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

  for (var i = 0; i < 5; i++)
    text += possible.charAt(Math.floor(Math.random() * possible.length));

  return text;
}

window.parentObj = {};

for (let i = 0; i < 100; i++) {
	window.parentObj[makeid()] = { innerVal: makeid() };
}

Tests:

Object.entries
const newObj = {}; newObj.count = Object.entries(window.parentObj).length;
Object.keys
const newObj = {}; newObj.count = Object.keys(window.parentObj).length;
Object.values
const newObj = {}; newObj.count = Object.values(window.parentObj).length;