Run results for: for...in vs _.values().map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36

Browser: Chrome 70

Operating system: Mac OS X 10.14.1

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
for...in	6.8 Ops/sec
_.values.map	6.5 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>

Script Preparation code:

function generateObject(objectSize) {
    let obj = {};
    for (let i = 0; i < objectSize; i++) {
        obj['key' + i] = 'val' + i;
    }
    return obj;
}

Tests:

for...in
const obj = generateObject(100000) const arr = [] let flag = true for (const f in obj) { if (flag) { arr.push(obj[f]) } }
_.values.map
const obj = generateObject(100000) let flag = true _.values(obj).filter(v => flag ? v : null)

Run results for: for...in vs _.values().map

for...in

_.values.map