splice() takes two optional parameters first being the index of the element to be deleted and the second is the number of elements to be deleted. In our case, we just wanted to remove one element so we passed 1 as the second parameter. findIndex() provide a
The remove() function removes the last array element if the element to remove doesn’t occur within the array. In that case, indexOf() returns the sentinel value -1. That value is passed to splice(), which starts to count from the end of the array when it sees a-1
Remove the Last Element From Array pop() removes the last element of an array and returns the removed element. cars.pop(); console.log(cars); Output [“Toyota “, “Volkswagen”, “BMW”] Great!!! Try to remove the first and last by our yourself. Keep learning.
· An array is a group of elements. Each element has its own index value.We can access any element using these indexes.But in the case of the last element, we don’t know the index until we know the number of elements present in the array. In this case, we have to
2. Array.prototype.splice() The splice() method is frequently used to remove existing elements from the array. The following code creates an array containing five elements, then calls the slice() method to create a shallow copy of all the values of the original array except the first.
How to add or remove an element at any position of an array? Just like an element is added or removed at last position by using push() and pop() method, an element can also be added or removed at any position of an array. This can be achieved by using splice()