Adding and removing elements from a specific position
So far, you have learned how to add elements at the end and at the beginning of an array, and you have also learned how to remove elements from the beginning and end of an array. What if we also want to add or remove elements from any particular position of our array? How can we do this?
We can use the splice
method to remove an element from an array by simply specifying the position/index that we would like to delete from and how many elements we would like to remove, as follows:
numbers.splice(5,3);
This code will remove three elements, starting from index 5 of our array. This means the numbers [5],numbers [6], and numbers [7] will be removed from the numbers array. The content of our array will be -3, -2, -1, 0, 1, 5, 6, 7, 8, 9, 10, 11, and 12 (as the numbers 2, 3, and 4 have been removed).
Note
As with JavaScript arrays and objects, we can also use the delete
operator to remove an element from the array, for example, remove numbers...