What's the Best Way to Copy/Clone an Array in JavaScript? (comparison)
I was wondering recently what the best way to copy/clone an array in JavaScript is? So in this video I'm comparing 8 different copy/clone methods including 3 deep copy/clone methods and timing how long each takes to complete.
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These results genuinely surprised me and lead me to update my SOP.
Methods compared:
[...arr]
arr.slice()
[].concat(arr)
arr.map(...)
arr.forEach(...)
JSON.parse(JSON.stringify(arr))
cloneDeep(arr)
clone(arr)
Thanks for watching, if you want to learn more about JavaScript please check out my other videos and the links below!
👇👇👇
https://www.npmjs.com/package/lodash
https://www.npmjs.com/package/clone
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⏲ Timestamps:
0:00 Intro
0:08 Pre Experiment
0:30 Different Methods
1:04 Attempt 1
1:32 Attempt 2
2:15 Memory Issues
2:38 Results
3:57 Post Experiment
4:04 Outro
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