Run results for: Set vs Object vs Map doing stuff

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36

Browser: Chrome 115

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Tests:

Set
const set = new Set(); for (let i = 0; i < 10000; ++i) { set.add(`key_${i}`); } for (let j = 0; j < 10000; ++j) { set.add(`key_${j}`); } let result = 0; for (let k = 0; k < 20000; ++k) { result += set.has(`key_${k}`); } console.log(result);
Object
const obj = {}; for (let i = 0; i < 10000; ++i) { obj[`key_${i}`] = true; } for (let j = 0; j < 10000; ++j) { obj[`key_${j}`] = 1; } let result = 0; for (let k = 0; k < 20000; ++k) { result += obj.hasOwnProperty(`key_${k}`); } console.log(result);
Map
const map = new Map(); for (let i = 0; i < 10000; ++i) { map.set(`key_${i}`, true); } for (let j = 0; j < 10000; ++j) { map.set(`key_${j}`, 1); } let result = 0; for (let k = 0; k < 20000; ++k) { result += map.get(`key_${k}`); } console.log(result);