Run results for: find vs enumObject vs findindex

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36

Browser: Chrome 90

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
1	136.7 Ops/sec
enum	284.4 Ops/sec
findindex	126.4 Ops/sec

Script Preparation code:

var arr = new Array(150000);
arr.fill({
    id: 0
});
arr = arr.map((el, idx) => el.id = idx);
var foo1 = Math.floor(Math.random() * 150000);
var foo2 = Math.floor(Math.random() * 150000);
var foo3 = Math.floor(Math.random() * 150000);
var foo4 = Math.floor(Math.random() * 150000);
var foo5 = Math.floor(Math.random() * 150000);

Tests:

1
function firstWay(id) { return arr.find(user => user.id === id); } firstWay(foo1); firstWay(foo2); firstWay(foo3); firstWay(foo4); firstWay(foo5);
enum
var userEnum = {}; function secondWay(id) { if (Object.keys(userEnum).length === 0) { arr.forEach(user => userEnum[user.id] = user); } return userEnum[id]; } secondWay(foo1); secondWay(foo2); secondWay(foo3); secondWay(foo4); secondWay(foo5);
findindex
function thirdWay(id) { const idx = arr.findIndex(user => user.id == id); return (idx !== -1) ? arr[idx] : null; } thirdWay(foo1); thirdWay(foo2); thirdWay(foo3); thirdWay(foo4); thirdWay(foo5);

Run results for: find vs enumObject vs findindex

find multiple users by id

1

enum

findindex