Run results for: Math.max() vs Function with For loop

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.1.1

Device Platform: Mobile

Date tested: one year ago

For loop

493K/s

Math.max

70K/s

View exact numbers

Test name	Executions per second
✓ For loop	492,786 Ops/sec
Math.max	69,533 Ops/sec

Script Preparation code:

var values = new Array(5000)

for (let i = 0; i < values.length; ++i) {
    values[i] = i % 20
}

const findMax = (arr) => {
    let max = -Number.Infinity
    for (let n = 0; n < arr.length; n++) {
        if (arr[n] > max) max = arr[n]
    }
    return max
}

Tests:

Math.max
return Math.max(...values)
For loop
return findMax(values)

Run results for: Math.max() vs Function with For loop

Compare speed of Math.max() vs for loop

Math.max

For loop