Deleting Items from an Array using JavaScript

If you want to remove an item from the end or beginning of an array, use the pop() or shift() commands. Both commands remove one item from the array: The pop() command removes the item from the end of the array, while shift() removes one item from the beginning.

for example, this code removes a value and stores it in the variable removedItem:

var p = [0,1,2,3];
var removedItem = p.pop();

The value of removedItem after this code runs is 3 and the array p now contains

[0,1,2].