how to delete first elemetn in node js code example

Example 1: js remove first item

let myArray = [1, 2, 3, 4, 5];

let removedElement = myArray.shift();

Example 2: es6 remove first element of array

var myarray = ["item 1", "item 2", "item 3", "item 4"];

//removes the first element of the array, and returns that element.
alert(myarray.shift());
//alerts "item 1"

//removes the last element of the array, and returns that element.
alert(myarray.pop());
//alerts "item 4"