Run results for: Array constructor vs literal performance (10 items)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Array literal - 10 items

32.0M/s

Array literal (assign by index) - 10 items

26.3M/s

Array literal (explicit length) - 10 items

10.7M/s

Array constructor - 10 items

8.1M/s

View exact numbers

Test name	Executions per second
✓ Array literal - 10 items	31,976,448 Ops/sec
Array literal (assign by index) - 10 items	26,319,300 Ops/sec
Array literal (explicit length) - 10 items	10,709,304 Ops/sec
Array constructor - 10 items	8,112,736 Ops/sec

Tests:

Array constructor - 10 items
var n = 10; var arr = new Array(n); for (var i = 0; i < n; i++) { arr[i] = i; }
Array literal - 10 items
var n = 10; var arr = []; for (var i = 0; i < n; i++) { arr.push(i); }
Array literal (assign by index) - 10 items
var n = 10; var arr = []; for (var i = 0; i < n; i++) { arr[i] = i; }
Array literal (explicit length) - 10 items
var n = 10; var arr = []; arr.length = n; for (var i = 0; i < n; i++) { arr[i] = i; }