the shift() method removes the first element from an array and returns that element. It’s similar to pop(), but it works at the beginning of the array instead of the end. Here’s how it works:
let colors = ["red", "green", "blue"];
let firstColor = colors.shift();
console.log(colors); // ["green", "blue"]
console.log(firstColor); // "red"In this example, we start with an array of three colors. The shift() method removes the first element (red) from the array and returns it. The original colors array is modified to contain only two elements.
Note that while push() and unshift() can add multiple elements at once, pop() and shift() remove only one element at a time.