Benchmark: array.find vs object by key

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];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.find
Object by key

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36

Browser/OS: Chrome 97 on Windows

View result in a separate tab

Test name	Executions per second
Array.find	10057320.0 Ops/sec
Object by key	14512430.0 Ops/sec

array.find vs object by key (version: 0)

Comparing performance of: Array.find vs Object by key

Created: 2 years ago by: Registered User

Jump to the latest result

Array.find

Object by key

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A