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/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Reduce with var

19K/s

Reduce with empty erray

13K/s

Reduce with filled array

7K/s

Reduce with filled array with null

6K/s

Reduce with new Array

6K/s

View exact numbers

Test name	Executions per second
✓ Reduce with var	18,967 Ops/sec
Reduce with empty erray	12,931 Ops/sec
Reduce with filled array	6,583 Ops/sec
Reduce with filled array with null	5,915 Ops/sec
Reduce with new Array	5,744 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);