Benchmark: hasOwnProperty vs NO-hasOwnProperty vs object.keys

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

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

Tests:

hasOwnProperty
let data = ''; for (let i=10000; i >= 0; i--) { for (let key in obj) { if(obj.hasOwnProperty(key)) { data = key; } } }
NO-hasOwnProperty
let data = ''; for (let i=10000; i >= 0; i--) { for (let key in obj) { data = key; } }
Object.keys
let data = ''; for (let i=10000; i >= 0; i--) { Object.keys(obj).forEach(key => { data = key; }); }

Rendered benchmark preparation results:

Previous results

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser/OS: Chrome 131 on Mac OS X 10.15.7

NO-hasOwnProperty

13K/s

Object.keys

4K/s

hasOwnProperty

1K/s

View exact numbers

hasOwnProperty vs NO-hasOwnProperty vs object.keys (version: 1)