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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0

Browser: Firefox 138

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Object.keys

4.4M/s

Object.values

1.8M/s

Object.entries

567K/s

View exact numbers

Test name	Executions per second
✓ Object.keys	4,428,614 Ops/sec
Object.values	1,761,631 Ops/sec
Object.entries	566,538 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;