shift
Remove and return the first element from an array.
[""].shift()The first element in the array is removed, so the array becomes smaller by one element.
If you have an array with 4 numbers, like 1, 2, 3, and 4, you remove the first number from the array by shifting it from the front. To shift the number from the array in blocks, do this:
let thoseNumbers = [1, 2, 3, 4];
let firstNumber = thoseNumbers.shift();Returns
- the first element in the array.
Example
Find out how many odd numbers there are as you remove all the numbers from a list.
let odds = 0;
let ints = [45, 78, 98, 3, 5, 6, 12, 643, 0, 34, 4];
while (ints.length > 0) {
if ((ints.shift() % 2) > 0) {
odds++;
}
}