Run results for: Lodash maxBy vs Math.max & Map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.2 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

_.maxBy

626K/s

Math.max and map

108K/s

View exact numbers

Test name	Executions per second
✓ _.maxBy	625,978 Ops/sec
Math.max and map	107,517 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.0.1/lodash.min.js'></script>

Script Preparation code:

function getRandomInt(max) {
    return Math.floor(Math.random() * Math.floor(max));
}

var arr = [];
for (var i = 0; i < 1000; i++) {
    arr.push({
        value: getRandomInt(100)
    });
}

function getValue(ob) {
    return ob.value;
}

Tests:

_.maxBy
_.maxBy(arr, (o)=>getValue(o));
Math.max and map
Math.max(arr.map(o => getValue(o)))