Run results for: Spread operator vs. Array.map change elemet

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Browser: Chrome 128

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Spread	188741.4 Ops/sec
Map	88821.3 Ops/sec

HTML Preparation code:


<script src=''></script>

Script Preparation code:

permutations = new Array(10000).map(() => ({ pagination: 'blah blah blah' }));
var index = 500;

Tests:

Spread
let newArr = [...permutations] newArr[index] = 'NEW blah blah blah'; return newArr;
Map
const newArr = permutations.map((item, i) => { if (i === index) { return item = 'NEW blah blah blah'; } else { return item; } }) return newArr;