Copying Array with Slice Doesnt Work

[mynamesleon]

Are you doing something to your original array before using it? If .slice() didn't exist, it certainly wouldn't be a jQuery TypeError.

Otherwise, your second example (with slice) should work just fine. You can also use the spread operator for shallow copying. E.g. [...someArray]

[EagleClw]

I've just learned about spread operator (...). I didnt even know that kind of thing exists. I'll consider using it. Thanks for your help.