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

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.0.0; SAMSUNG SM-A520F) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/16.0 Chrome/92.0.4515.166 Mobile Safari/537.36

Browser: Chrome Mobile 92

Operating system: Android 8.0.0

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
indexOf	935.8 Ops/sec
includes	918.3 Ops/sec
find	85.0 Ops/sec
findIndex	85.3 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