Can anyone let me know if using cloneElement (on exist element instance) or createElement (on react Element class) which one is better in term of performance?
Sometimes cloning something is faster than create new instance.
Please let me know. Thanks
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cloneElement will be usually be faster because you only need to instantiate one initial component.
This jsperf test shows
cloneElement to be nearly twice as fast as
createElement for Chromium 45 on Linux:
If you have a base component that you can clone without changing, then using
cloneElement is a clear choice, both semantically and in terms of performance.
In Safari 10.0.3, cloneElement is 31% slower for the JSPerf test mentioned above (in Chrome, createElement is 17% slower for me).
I also made another JSPerf test, where cloneElement is compared to “function-as-children”. In this case, cloneElement is slower by a big margin in both Chrome (26%) and Safari (46%).