Run results for: for..of, for..in, for, map, forEach

Run details:

User agent: Mozilla/5.0 (Linux; Android 11) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/108.0.5359.128 Mobile DuckDuckGo/5 Safari/537.36

Browser: Chrome Mobile 108

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
For of	266.3 Ops/sec
map	75.4 Ops/sec
forEach	75.6 Ops/sec
for in	18348.1 Ops/sec

Script Preparation code:

const arr = new Array(100).fill(1);
const obj = {
    ...arr.reduce((acc, curr) => {
        acc[curr] = curr;
        return acc;
    }, {})
}

Tests:

For of
const arr = new Array(100).fill(1); for (const item of arr) { console.log(item) }
map
const arr = new Array(100).fill(1); arr.map(console.log)
forEach
const arr = new Array(100).fill(1); arr.forEach(console.log)
for in
const arr = new Array(100).fill(1); const obj = { ...arr.reduce((acc, curr) => { acc[curr] = curr; return acc; }, {}) } for (const item in obj) { console.log(obj[item]) }

Run results for: for..of, for..in, for, map, forEach

For of

map

forEach

for in