una funcion que genere numeros de tarjetas de credito de mastercard y visa
var visa = "4" var mastercard = 5 var amex = 3 var diners = 3 var ccv = "123" // function that: creates a random credit card number and ccv var credit_cards = ["visa", "mastercard", "amex", "diners"] function random_credit_card(credit_cards){ var credit_card_prefix = credit_cards[Math.floor(Math.random()*credit_cards.length)] var credit_card_number = credit_card_prefix + "1234567890" var credit_card_ccv = "123" return [credit_card_number, credit_card_ccv] }