Run results for: JS findIndex vs indexOf

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/119.0

Browser: Firefox 119

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Get item by index with Array.indexOf	12761.4 Ops/sec
Get item by index with Array.findIndex	3595.4 Ops/sec

Script Preparation code:

var arr = [];
var i = 0;

while (i <= 1E5) arr[i] = i++;

Tests:

Get item by index with Array.indexOf
const index = arr.indexOf(1E5) const item = arr[index]
Get item by index with Array.findIndex
const index = arr.findIndex(item => item === 1E5); const item = arr[index]