how to pop first element in javascript code example

Example 1: javascript remove first item from array

var colors = ["red", "green", "blue"];
var red=colors.shift();
//colors is now ["green","blue"];

Example 2: remove first element of array javascript

const arr = ['foo', 'bar', 'qux', 'buz'];

arr.shift();	// 'foo'
arr;			// ['bar', 'qux', 'buz']