Run results for: Reduce array3

Run details:

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: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Reduce with empty erray

20K/s

Reduce with var

17K/s

Reduce with filled array

8K/s

Reduce with filled array with null

8K/s

Reduce with new Array

6K/s

View exact numbers

Test name	Executions per second
✓ Reduce with empty erray	19,870 Ops/sec
Reduce with var	17,264 Ops/sec
Reduce with filled array	8,321 Ops/sec
Reduce with filled array with null	7,897 Ops/sec
Reduce with new Array	6,373 Ops/sec

HTML Preparation code:

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

Script Preparation code:

var arr = Array(10_000).fill(1)

Tests:

Reduce with empty erray
arr.reduce((acc, x) => { acc.push(x); return acc; }, []);
Reduce with filled array
arr.reduce((acc, x, index) => { acc[index] = x; return acc; }, new Array(arr.length));
Reduce with filled array with null
arr.reduce((acc, x, index) => { acc[index] = x; return acc; }, new Array(arr.length).fill(null));
Reduce with new Array
arr.reduce((acc, x, index) => { acc[index] = x; return acc; }, new Array());
Reduce with var
const a = new Array(arr.length); arr.reduce((acc, x, index) => { acc[index] = x; return acc; }, a);