Listing latest benchmark results

Historical Performance Data aggregated from 17 community runs

Desktop Results:
Chrome 5 runs
.fill(true).map()
2.8M/s
.fill("").map()
2.8M/s
.fill(undefined).map()
2.8M/s
.fill(null).map()
2.8M/s
Array.from().map()
380K/s
Array.from() only
345K/s

Fastest: .fill(true).map() (8.3x faster)

View exact numbers
  • ✓ .fill(true).map(): 2,847,710 ops/sec
  • • .fill("").map(): 2,800,939 ops/sec
  • • .fill(undefined).map(): 2,792,708 ops/sec
  • • .fill(null).map(): 2,778,600 ops/sec
  • • Array.from().map(): 380,070 ops/sec
  • • Array.from() only: 344,793 ops/sec
Mobile Results:
Chrome 6 runs
.fill(undefined).map()
852K/s
.fill(true).map()
844K/s
.fill("").map()
841K/s
.fill(null).map()
838K/s
Array.from().map()
110K/s
Array.from() only
94K/s

Fastest: .fill(undefined).map() (9.0x faster)

View exact numbers
  • ✓ .fill(undefined).map(): 852,196 ops/sec
  • • .fill(true).map(): 844,032 ops/sec
  • • .fill("").map(): 840,772 ops/sec
  • • .fill(null).map(): 837,851 ops/sec
  • • Array.from().map(): 110,309 ops/sec
  • • Array.from() only: 94,435 ops/sec
Safari 6 runs
Array.from() only
3.6M/s
Array.from().map()
1.8M/s
.fill(null).map()
1.2M/s
.fill("").map()
1.2M/s
.fill(undefined).map()
1.2M/s
.fill(true).map()
1.2M/s

Fastest: Array.from() only (3.1x faster)

View exact numbers
  • ✓ Array.from() only: 3,623,562 ops/sec
  • • Array.from().map(): 1,787,721 ops/sec
  • • .fill(null).map(): 1,177,933 ops/sec
  • • .fill("").map(): 1,174,504 ops/sec
  • • .fill(undefined).map(): 1,172,346 ops/sec
  • • .fill(true).map(): 1,167,314 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 119 Mac OS X 10.15.7 Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36 2 years ago
Mobile Safari 17 iOS 17.2.1 Mozilla/5.0 (iPhone; CPU iPhone OS 17_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.1 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
Mobile Safari 17 iOS 17.3 Mozilla/5.0 (iPhone; CPU iPhone OS 17_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3 Mobile/15E148 Safari/604.1 2 years ago
Mobile Safari 17 iOS 17.0 Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1 2 years ago
Chrome Mobile 121 Android Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Mobile Safari/537.36 2 years ago
Chrome Mobile 121 Android Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Mobile Safari/537.36 2 years ago
Mobile Safari 17 iOS 17.2.1 Mozilla/5.0 (iPhone; CPU iPhone OS 17_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.1 2 years ago
Mobile Safari 17 iOS 17.2.1 Mozilla/5.0 (iPhone; CPU iPhone OS 17_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/21C66 Twitter for iPhone/10.26 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 2 years ago
Mobile Safari 17 iOS 17.2.1 Mozilla/5.0 (iPhone; CPU iPhone OS 17_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.1 2 years ago
Chrome 120 Linux Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 2 years ago
Chrome Mobile 121 Android Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Mobile Safari/537.36 2 years ago
Chrome Mobile 121 Android Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Mobile Safari/537.36 2 years ago
Chrome Mobile 120 Android Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Mobile Safari/537.36 2 years ago
Chrome Mobile 121 Android Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Mobile 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 2 years ago