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Run results for:
Lodash cloneDeep vs Lodash clone vs Array.slice() vs. Object.assign()
For times when a shallow copy is needed, what is the performance difference between these 3 methods.
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=511992" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3.1 Safari/605.1.15
Browser:
Safari 17
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Array.slice()
14.0M/s
Lodash clone
8.9M/s
Object.assign()
4.7M/s
Lodash cloneDeep
1.9M/s
View exact numbers
Test name
Executions per second
✓
Array.slice()
13,965,203 Ops/sec
Lodash clone
8,884,147 Ops/sec
Object.assign()
4,720,721 Ops/sec
Lodash cloneDeep
1,892,619 Ops/sec
HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.20/lodash.min.js'></script>
Script Preparation code:
var arr = ['one', 'two', 'three', {four: 'five'}];
Tests:
Lodash cloneDeep
var myCopy = _.cloneDeep(arr)
Lodash clone
var myCopy = _.clone(arr)
Array.slice()
var myCopy = arr.slice()
Object.assign()
var myCopy = Object.assign([], arr)