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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0

Browser: Firefox 133

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Math.max	22342.4 Ops/sec
For loop	128079.1 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