Run results for: lodash vs for-of vs forEach j

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36 Edg/92.0.902.62

Browser: Chrome 92

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
lodash.each	2725.7 Ops/sec
native for-of w/ entries	1545.4 Ops/sec
native forEach w/ entries	1413.4 Ops/sec
vanilla for-loop w/ Object.keys	894.6 Ops/sec
vanilla for-loop w/ Object.entries	255.9 Ops/sec
native for-in	493.0 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js"></script>

Script Preparation code:

var obj = Array.from({ length: 10000 }).map((value, i) => i).reduce((val, v) => { val[v] = v; return val; }, {})

Tests:

lodash.each
_.each(obj, function(v,k) {const a = v + 'todo'})
native for-of w/ entries
for (const [k, v] of Object.entries(obj)) {}
native forEach w/ entries
Object.entries(obj).forEach(function(v, k) {})
vanilla for-loop w/ Object.keys
const keys = Object.keys(obj); for (let i = 0; i < keys.length; i++) { const v = obj[keys[i]] + 'todo' }
vanilla for-loop w/ Object.entries
const entries = Object.entries(obj); for (let i = 0; i < entries.length; i++) { const [k, v] = entries[i] + 'todo' }
native for-in
for (const prop in obj) { if (obj.hasOwnProperty(prop)) { const v = obj[prop] + 'todo' } }