remove first element and return new array in javascript code example

Example 1: javascript remove first element from array

var arr = [1, 2, 3, 4]; 
var theRemovedElement = arr.shift(); // theRemovedElement == 1
console.log(arr); // [2, 3, 4]

Example 2: removing first item array js

var list = ["bar", "baz", "foo", "qux"];
list.shift()//["baz", "foo", "qux"]