Run results for: Map vs JSON

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Json

18.0M/s

Map

13.1M/s

View exact numbers

Test name	Executions per second
✓ Json	17,998,592 Ops/sec
Map	13,101,606 Ops/sec

Script Preparation code:

var data = [
    {name: "anonystick", sex:1, age: 42, phone: 03543214564},
    {name: "medium", sex:0, age: 45, phone: 0321452145},
    {name: "subrss", sex:1, age: 41, phone: 03789456785}
]

Tests:

Map
const map = new Map(data.map(item=> [item.name, item])); data.map(( {name} )=> map[name] ?? null);
Json
const json = data.reduce((acc, item) => { acc[item.account] = item.rank return acc }, {}); data.map( ({name})=> json[name] ?? null)