Run results for: Loop over object: lodash vs Object.entries and Object.keys

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.71 Safari/537.36

Browser: Chrome 94

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
lodash.each	3491.2 Ops/sec
lodash.map	3460.0 Ops/sec
Object.entries.forEach	1344.7 Ops/sec
vanilla for-loop w/ Object.entries	1533.3 Ops/sec
Object.keys.forEach	1059.9 Ops/sec
vanilla for-loop w/ Object.keys	1216.0 Ops/sec
for in	1076.3 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/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) {})
lodash.map
_.map(obj, function(v, k) {})
Object.entries.forEach
Object.entries(obj).forEach(function([k, v]) {})
vanilla for-loop w/ Object.entries
const entries = Object.entries(obj); for (let i = 0; i < entries.length; i++) { const [k, v] = entries[i]; }
Object.keys.forEach
Object.keys(obj).forEach(function(k) {const v = obj[k]})
vanilla for-loop w/ Object.keys
const keys = Object.keys(obj); for (let i = 0; i < keys.length; i++) { const k = keys[i]; const v = obj[k]; }
for in
for (const k in obj) { const v = obj[k] }