Run results for: lodash filter vs native map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36

Browser: Chrome 85

Operating system: Mac OS X 10.15.6

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
test one	20341.9 Ops/sec
test two	12564.4 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var testArray = [];
for (var i = 0; i < 10000; i++) {
  testArray.push(Math.floor(Math.random(i * 1000) * 100))
}

Tests:

test one
function filterElement(testArray) { return testArray.filter(a => a<10) } filterElement(testArray);
test two
function mapElement(testArray) { return testArray.map(a => { if(a<10) return a; }) } mapElement(testArray);