Run results for: Object entries, values, keys, and Array.from

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36

Browser: Chrome 94

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
entries	107096.1 Ops/sec
Values	140609.3 Ops/sec
Keys	633811.6 Ops/sec
Array.from	4545507.0 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.obj = {};

for (let i = 0; i < 100; i++) {
	window.obj[makeid()] = makeid();
}

Tests:

entries
const len = Object.entries(window.obj).length;
Values
const len = Object.values(window.obj).length;
Keys
const len = Object.keys(window.obj).length;
Array.from
const len = Array.from(window.obj).length;

Run results for: Object entries, values, keys, and Array.from

entries

Values

Keys

Array.from