Run results for: Loop over object: lodash vs Object.entries vs Object.keys vs Object.values vs for of vs for in vs keys for of

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36

Browser: Chrome 106

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
lodash.each	447.7 Ops/sec
lodash.map	447.6 Ops/sec
Object.entries.map	238.8 Ops/sec
vanilla for-loop w/ Object.entries	332.3 Ops/sec
lodash.forEach	454.0 Ops/sec
Object.values for	396.1 Ops/sec
Object.keys for	861.4 Ops/sec
Object.keys for in	694.0 Ops/sec
Object.values for of	369.4 Ops/sec
Object.keys for of	471.2 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[`key ${v}`] = `val ${v}`; 
	return val; }, {})

Tests:

lodash.each
_.each(obj, function(v, k) { const res = obj[k]; })
lodash.map
_.map(obj, function(v, k) { const res = obj[k]; })
Object.entries.map
Object.entries(obj).map(function([k, v]) { const res = obj[k]; })
vanilla for-loop w/ Object.entries
const entries = Object.entries(obj); for (let i = 0; i < entries.length; i++) { const [k, v] = entries[i]; }
lodash.forEach
_.forEach(obj, function(v, k) { const res = obj[k]; })
Object.values for
const entries = Object.values(obj); for (let i = 0; i < entries.length; i++) { const v = entries[i]; }
Object.keys for
const entries = Object.keys(obj); for (let i = 0; i < entries.length; i++) { const [k, v] = entries[i]; }
Object.keys for in
const entries = Object.keys(obj); for (const key in entries) { const [k, v] = entries[key];}
Object.values for of
const entries = Object.values(obj); for (const value of entries) {const v = value;}
Object.keys for of
const entries = Object.keys(obj); for (const key of entries) { const v = obj[key]; }