This is incorrect. I didn't take the time to read through all of the code in jsfiddle, but every resource will typically tell you that if/else is good for two discrete values, but switch statements win for performance for anything larger than two values. That said it's really miniscule in performance and the best option is the one that's most readable.
https://www.oreilly.com/library/view/high-performance-javascript/9781449382308/ch04.html#:~:text=As%20it%20turns%20out%2C%20the,than%20it%20is%20for%20switch%20.
https://stackoverflow.com/questions/767821/is-else-if-faster-than-switch-case
https://www.geeksforgeeks.org/switch-vs-else/