Run results for: [2024] Lodash .sumBy vs. Reduce with / 10002

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

_.sumBy with /1000

1K/s

reduce with /1000

237/s

View exact numbers

Test name	Executions per second
✓ _.sumBy with /1000	1,271 Ops/sec
reduce with /1000	237 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/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 < 100000; i++){
  arr.push({value:getRandomInt(100)});
}

Tests:

_.sumBy with /1000
_.sumBy(arr,"value") / 1000;
reduce with /1000
arr.reduce((prev, next) => { const total = next || 0; return prev + total; }, 0) / 1000;