Random function & Fun ball8 command

gistfile1.txt

//Random function
function rand(min, max) { //Random Function
    return Math.floor(Math.random() * (max - min) + min);
}

//Ball8 command
} else if (msg.body.startsWith('!ball8')) { //Ball8 fun game
        var args = msg.body.split(' ');
        var bola8palavras = ["It's right", "It definitely is", "Without a doubt", "Yes, definitely", "You can count on it", "In my opinion, yes", "Probably", "It seems so", " Yes "," Signs point to yes "," Vague answer try again "," Ask again later "," I better not tell you now "," I can't predict now "," Focus and ask again " , "Don't count on it", "My answer is no", "My sources say no", "Looks like no", "Very Doubtful"];
            if (args.length >= 2) {               
                msg.reply('*Ball8 response:* '+bola8palavras[rand(1,bola8palavras.length)]); //requires random function
            }
            else {
                client.sendMessage(msg.from,'_Have you heard of the mysteries of the 8 ball? What has the property of predicting the future? No? Well, my friend, get ready to know the most mysterious mysteries that are hidden within the universe. Ask the 8-ball to respond._\n\n_Use !ball8 [Ask]_');
            }           
}