Listing latest benchmark results

Historical Performance Data aggregated from 18 community runs

Desktop Results:
Chrome 12 runs
for...of - keys (ES6)
9K/s
Object.keys+forEach (ES5)
9K/s
for...of - values (ES6)
8K/s
Object.entries (ES8)
7K/s
for...of - entries (ES8)
7K/s
for...in
6K/s

Fastest: for...of - keys (ES6) (1.5x faster)

View exact numbers
  • ✓ for...of - keys (ES6): 9,017 ops/sec
  • • Object.keys+forEach (ES5): 8,923 ops/sec
  • • for...of - values (ES6): 7,703 ops/sec
  • • Object.entries (ES8): 6,775 ops/sec
  • • for...of - entries (ES8): 6,751 ops/sec
  • • for...in: 6,097 ops/sec
Firefox 6 runs
for...of - values (ES6)
119K/s
Object.keys+forEach (ES5)
53K/s
for...in
49K/s
Object.entries (ES8)
49K/s
for...of - keys (ES6)
48K/s
for...of - entries (ES8)
45K/s

Fastest: for...of - values (ES6) (2.6x faster)

View exact numbers
  • ✓ for...of - values (ES6): 119,242 ops/sec
  • • Object.keys+forEach (ES5): 52,833 ops/sec
  • • for...in: 49,135 ops/sec
  • • Object.entries (ES8): 48,848 ops/sec
  • • for...of - keys (ES6): 48,197 ops/sec
  • • for...of - entries (ES8): 45,138 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Browser OS User Agent When Created
Chrome Mobile 143 Android Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Mobile Safari/537.36 7 months ago
Firefox 146 Ubuntu Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:146.0) Gecko/20100101 Firefox/146.0 7 months ago
Firefox 143 Windows Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:143.0) Gecko/20100101 Firefox/143.0 8 months ago
Chrome 140 Mac OS X 10.15.7 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 10 months ago
Firefox 142 Windows Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:142.0) Gecko/20100101 Firefox/142.0 11 months ago
Firefox 141 Mac OS X 10.15 Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:141.0) Gecko/20100101 Firefox/141.0 one year ago
Chrome 135 Windows Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36 one year ago
Safari 18 Mac OS X 10.15.7 Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Safari/605.1.15 one year ago
Chrome 133 Mac OS X 10.15.7 Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36 one year ago
Firefox 127 Windows Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:127.0) Gecko/20100101 Firefox/127.0 one year ago
Firefox 135 Windows Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0 one year ago
Chrome 132 Windows Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36 one year ago
Firefox Mobile 133 Android Mozilla/5.0 (Android 11; Mobile; rv:133.0) Gecko/133.0 Firefox/133.0 one year ago
Chrome 131 Mac OS X 10.15.7 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 one year ago
Chrome 130 Mac OS X 10.15.7 Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36 one year ago
Chrome 127 Windows Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36 2 years ago
Chrome 127 Windows Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36 2 years ago
Opera Mobile 81 Android Mozilla/5.0 (Linux; Android 14; SM-S928B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.149 Mobile Safari/537.36 OPR/81.6.4292.79147 2 years ago
Chrome 122 Mac OS X 10.15.7 Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 2 years ago
Chrome 121 Windows Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 Edg/121.0.0.0 2 years ago
Yandex Browser 23 iOS 17.2 Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 YaBrowser/23.11.7.57.10 SA/3 Mobile/15E148 Safari/604.1 2 years ago
Chrome 120 Mac OS X 10.15.7 Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 2 years ago
Chrome 120 Windows Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0 2 years ago