Run results for: lodash for-in vs native for-in (lodash version: 4.17.10)

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/97.0.4692.84 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 97

Operating system: iOS 15.3

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Native for-in	33.9 Ops/sec
lodash for-in	21.3 Ops/sec
Native for-in 2	33.2 Ops/sec
lodash for-in 2	20.6 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.min.js'></script>

Script Preparation code:

var obj = Array.from({ length: 100000 }).map((value, i) => i).reduce((val, v) => { val[v] = v; return val; }, {})

Tests:

Native for-in
for (const prop in obj) { if (obj.hasOwnProperty(prop)) { const v = obj[prop]; } }
lodash for-in
_.forIn(obj, function(prop){if (obj.hasOwnProperty(prop)) { const v = obj[prop]; } })
Native for-in 2
for (const prop in obj) { if (obj.hasOwnProperty(prop)) { const v = obj[prop]; } }
lodash for-in 2
_.forIn(obj, function(prop){if (obj.hasOwnProperty(prop)) { const v = obj[prop]; } })

Run results for: lodash for-in vs native for-in (lodash version: 4.17.10)

lodash for-in vs native for-in (lodash version: 4.17.10)

Native for-in

lodash for-in

Native for-in 2

lodash for-in 2