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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 13_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 [LinkedInApp]

Browser: Mobile Safari 13

Operating system: iOS 13.7

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Number 1: use for iterator	683670.8 Ops/sec
Number 2: using reduce method	6035797.0 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)