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Run results for:
native reverse find vs native array findLast vs for loop find
Compare the new ES6 spread operator with the traditional concat() method
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=623967" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36
Browser:
Chrome 143
Operating system:
Windows
Device Platform:
Desktop
Date tested:
3 months ago
Test name
Executions per second
array find
19467938.0 Ops/sec
array findlast
7884425.0 Ops/sec
for loop
53958992.0 Ops/sec
HTML Preparation code:
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script> <script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
var users = [ { 'user': 'joey', 'age': 32 }, { 'user': 'ross', 'age': 41 }, { 'user': 'joey', 'age': 32 }, { 'user': 'ross', 'age': 41 }, { 'user': 'joey', 'age': 32 }, { 'user': 'ross', 'age': 41 }, { 'user': 'joey', 'age': 32 }, { 'user': 'ross', 'age': 41 }, { 'user': 'chandler', 'age': 39 } ]
Tests:
array find
// Native users.slice().reverse().find(function (o) { return o.age < 40; })
array findlast
users.slice().findLast(function (o) { return o.age < 40; })
for loop
let lastItem = undefined; for (let i = users.length - 1; i >= 0; i--) { if (users[i].age < 40) { lastItem = users[i]; break; // Exit the loop once the item is found } }