Run results for: Object.entries VS Object.keys VS Object.values length check

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:127.0) Gecko/20100101 Firefox/127.0

Browser: Firefox 127

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Object.keys

1.9M/s

Object.values

1.4M/s

Object.entries

413K/s

View exact numbers

Test name	Executions per second
✓ Object.keys	1,922,528 Ops/sec
Object.values	1,387,954 Ops/sec
Object.entries	413,040 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()] = makeid();
}

Tests:

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

Run results for: Object.entries VS Object.keys VS Object.values length check

JS object size performance comparison

Object.entries

Object.keys

Object.values