Run results for: key in object vs object.keys find

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36

Browser: Chrome 140

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
key in object	66.8 Ops/sec
object.keys find	63.8 Ops/sec

Script Preparation code:

var obj = {
  'a': 1,
  'b': 1,
  'c': 1,
  'd': 1,
  'e': 1,
  'f': 1,
  'g': 1
};

Tests:

key in object
var key = 'e'; for (var i=10000; i > 0; i--) { if (key in obj) { console.log(key); } }
object.keys find
var key = 'e'; for (var i=10000; i > 0; i--) { if (Object.keys(obj).find((record) => record === key)) { console.log(key); } }