Run results for: Map.set() vs Object assignment in loops

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36

Browser: Chrome 97

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Tests:

for-loop + Map.set
const obj = {} const map = new Map() const n = 1000000; for (let i = 0; i < n; i++) { map.set(i, i); }
for-loop + Object assignment
const obj = {} const map = new Map() const n = 1000000; for (let i = 0; i < n; i++) { obj[i] = i; }
forEach + Map.set
const obj = {} const map = new Map() const n = Array(1000000).fill(0) n.forEach((value, index) => { map.set(index, index); })
forEach + Object assignment
const obj = {} const map = new Map() const n = Array(1000000).fill(0) n.forEach((value, index) => { obj[index] = index; })