Run results for: findIndex vs map & indexOf

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36 OPR/64.0.3417.150

Browser: Opera 64

Operating system: Mac OS X 10.15.2

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
findIndex	124630.1 Ops/sec
map and indexOf	3084.3 Ops/sec

Script Preparation code:

var arr = new Array(15000);
arr.fill({ id: 0 });
arr = arr.map((el, idx) => el.id = idx);
var foo = Math.floor(Math.random() * 15000);

Tests:

findIndex
var index = arr.indexOf(foo);
map and indexOf
var index = arr.map(o => o.id).indexOf(foo);

Run results for: findIndex vs map & indexOf

findIndex

map and indexOf