isDiscover :: a β†’ Boolean
Reports whether the received value is a valid credit card number and is a Discover card
import isDiscover from 'deep-waters/credit-cards/isDiscover';
isDiscover(6011583945260254); // Discover β†’ true
isDiscover(347190259623701); // American Express β†’ false
isDiscover(4286124395547263); // VISA β†’ false
isDiscover(38716394960899); // Diners Club β†’ false
isDiscover(3528701379615495); // JCB β†’ false
isDiscover('6011-5839-4526-0254'); // Credit card format β†’ false
isDiscover("foo"); // β†’ false
isDiscover(undefined); // β†’ false
Please note, isDiscover assumes the receiving value is a number or a string without the usual dashes. It only evaluates the credit card number, not its format.
Last modified 2yr ago
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