Run results for: JS Array IndexOf vs includes vs findIndex vs find

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36 OPR/101.0.0.0 (Edition Yx 05)

Browser: Opera 101

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
indexOf	5881105.0 Ops/sec
includes	7519314.5 Ops/sec
find	1063.3 Ops/sec
findIndex	980.0 Ops/sec

Script Preparation code:

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

Tests:

indexOf
const index = arr.indexOf(1E5);
includes
const included = arr.includes(1E5);
find
const item = arr.find(item => item == 1E5);
findIndex
const index = arr.findIndex(item => item == 1E5);

Run results for: JS Array IndexOf vs includes vs findIndex vs find

indexOf

includes

find

findIndex