Difference between Array.slice() and Array.splice()

In javascript, we use two methods slice() and splice() very often, but still, get confused between them. Here you can have a quick look at these methods and find the difference.

1. Uses.

slice(): This method is used to select array elements.
splice(): This method is used to add/remove elements to/from an array.

2. Number of Arguments.

slice(): This method can take a maximum of 2 arguments.

Syntax: array.slice(start, end)

start: It specifies where to start the selection of elements.
end(optional): If the 2nd argument provided, elements from the start position up to the end of the array will be returned(excluding the end position).

Example:

let array = [1,2,3,4,5];
array.slice(1)  //returns [2,3,4,5]
array.slice(1,3) //returns [2,3]

splice(): This method can take n arguments.

Syntax: array.splice(start, removeCount, item1, ...., itemN)

start: It specifies at what position to add/remove items.
removeCount(optional): It specifies the number of items to be removed
item1,...itemN(optional): Items to be added to the array.
Example:

let array = [1,2,3,4,5];
array.splice(1)  //returns [2,3,4,5]
array.splice(1,3) //returns [2,3,4]
array.splice(2,1,6,7); //here it return [3] as it removes the element at index 2.
                       //console.log(array) is [1,2,6,7,4,5]

3. Return Value:

slice(start, end): It returns the array of elements begin with the start and up to the end of the array excluding the end index.
Example:

let array = [1,2,3,4,5];
array.slice(1,3)  //returns [2,3]

splice(start, removeCount): It returns the array of removed elements begin with start index with number of removeCount.
Example:

let array = [1,2,3,4,5];
array.splice(1,2)  //returns [2,3]

4. Mutability:

slice(): This method doesn't change the original array. But it is considered as Accessor method.
Example:

let array = [1,2,3,4,5];
array.slice(1)  //returns [2,3,4,5];
console.log(array) // [1,2,3,4,5]

splice(): This method is mutator method as it modifies the original array.
Example 1.

let array = [1,2,3,4,5];
array.splice(1,2)  //returns [2,3]
console.log(array) // [1,4,5]

Example 2.

let array = [1,2,3,4,5];
array.splice(2,1,6,7)  //returns [3]
console.log(array) // [1,2,6,7,4,5]

Thank you.