Run results for: array.find vs object by key

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Object by key

174.1M/s

Array.find

23.0M/s

View exact numbers

Test name	Executions per second
✓ Object by key	174,148,608 Ops/sec
Array.find	22,999,624 Ops/sec

Script Preparation code:

var arrayExample = Array(40).fill().map((_, idx) => ({
    id: idx
}));
var objExample = arrayExample.reduce((prev, curr) => prev[curr.id] = curr);

Tests:

Array.find
const found = arrayExample.find((item) => item.id === 39);
Object by key
const found = objExample[39];