What is the difference between splice and slice in JavaScript?

Can you explain the difference between splice and slice in JavaScript?

Sure! The splice method changes the contents of an array by removing or replacing existing elements and/or adding new elements. In contrast, slice returns a shallow copy of a portion of an array into a new array without modifying the original array.

Can you give me an example of how to use both methods?

Of course! For splice, you might use it like this: array.splice(1, 2, 'newItem'), which removes 2 items starting from index 1 and adds 'newItem'. For slice, you could do let newArray = array.slice(1, 3), which creates a new array with elements from index 1 to 2.

What happens if I use splice on an empty array?

If you use splice on an empty array, it will simply return an empty array and no changes will be made.

Are there any performance differences between the two?

Yes, splice can be slower because it modifies the original array, while slice is generally faster as it creates a new array without altering the original.