Run results for: Map.get() vs Array.find()

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36 Edg/138.0.0.0

Browser: Chrome 138

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Map.get()

10.9M/s

Array.find()

3K/s

View exact numbers

Test name	Executions per second
✓ Map.get()	10,897,008 Ops/sec
Array.find()	3,425 Ops/sec

Script Preparation code:

dataArr = [...Array(10000)].map((_, id) => ({ id, data: Math.random() }));
dataMap = new Map(dataArr.map(v => [v.id, v]));

Tests:

Array.find()
dataArr.find((item) => item.id === Math.floor(Math.random() * 10000))
Map.get()
dataMap.get(Math.floor(Math.random() * 10000))