Splice & Slice array Methods in JavaScript || DSA in JavaScript Part-9 || useCase
The splice() method changes the contents of an array by removing or replacing existing elements and/or adding new elements in place.
To create a new array with a segment removed and/or replaced without mutating the original array, use toSpliced(). To access part of an array without modifying it, see slice().
The slice() method returns a shallow copy of a portion of an array into a new array object selected from start to end (end not included) where start and end represent the index of items in that array. The original array will not be modified.