to remove first and last element in array

Solution 1:

fruits.shift();  // Removes the first element from an array and returns only that element.
fruits.pop();    // Removes the last element from an array and returns only that element. 

See all methods for an Array.

Solution 2:

Creates a 1 level deep copy.

fruits.slice(1, -1)

Let go of the original array.

Thanks to @Tim for pointing out the spelling errata.

Solution 3:

var fruits = ["Banana", "Orange", "Apple", "Mango"];
var newFruits = fruits.slice(1, -1);
console.log(newFruits); //  ["Orange", "Apple"];

Here, -1 denotes the last element in an array and 1 denotes the second element.