Run results for: Object.keys vs Object.entries vs Object.values for determining size

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

Browser: Firefox 115

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object.entries	7180.3 Ops/sec
Object.keys	33673.8 Ops/sec
Object.values	13532.9 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 < 5000; i++) {
	window.parentObj[makeid()] = makeid();
}

Tests:

Object.entries
Object.entries(window.parentObj)
Object.keys
Object.keys(window.parentObj)
Object.values
Object.values(window.parentObj)

Run results for: Object.keys vs Object.entries vs Object.values for determining size

For measuring the fastest way to measure a length of an object

Object.entries

Object.keys

Object.values