Run results for: Javascript: reduce VS for (modified)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36

Browser: Chrome 85

Operating system: Mac OS X 10.15.6

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Number 1: use for iterator	710934.5 Ops/sec
Number 2: using reduce method	8873967.0 Ops/sec

Script Preparation code:

var list = [1, 0, -2, -1, 3, 0, 1, 8, -10, 3, 0, -1, -3];

Tests:

Number 1: use for iterator
let countNumberGreaterThanZero = 0; const listLength = list.length; for (let i = 0; i < listLength; i++) { if (list[i] > 0) { countNumberGreaterThanZero++; } }
Number 2: using reduce method
let countsNumbersGreaterThanZero = (acc, cur) => acc + (cur > 0 ? 1 : 0); list.reduce(countsNumbersGreaterThanZero, 0)