Run results for: ES6 Map vs Hash Table vs Keys

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36 Edg/132.0.0.0

Browser: Chrome 132

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Hash Table

63.7M/s

Array

38.4M/s

ES6 Map

8.0M/s

View exact numbers

Tests:

Array
const myObj = {a:1,b:2,c:3} const myArr = Object.keys(myObj) myArr.includes("c")
Hash Table
const myObj = {a:1,b:2,c:3} myObj.hasOwnProperty("c")
ES6 Map
const myObj = {a:1,b:2,c:3} const myMap = new Map(Object.entries(myObj)) myMap.has("c")