how to select random values fro array code example

Example 1: pick random from array

const months = ["January", "February", "March", "April", "May", "June", "July"];

const random = Math.floor(Math.random() * months.length);
console.log(random, months[random]);

Example 2: how to get random item from an array

//Function to make it easier
Array.prototype.random = function() {
    return this[Math.floor((Math.random() * this.length))];
};

var colors = ["red","blue","green","yellow"];
var randomColor = colors.random();