removing first n elements from array 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: javascript how to remove first element of array

var colors = ["red", "blue", "green"]

var firstColor = colors.shift()

console.log(firstColor) // red
console.log(colors) // blue green