Run results for: Elastic find index fast

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser: Chrome 117

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

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

Tests:

Array.prototype.findIndex
const index = arr.findIndex(item => item === 1E5);
For loop
var index = -1 for(var i = 0; i < arr.length; i++) { if(arr[i] === 1E5) { index = i; break; } }
While loop
let index = -1; let i = 0 const len = arr.length; while (++i < len) { if (arr[i] === 1E5) { index = i break; } }