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September 15, 2017 08:26
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Detect type of the payment card
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| export default (cardNumber) => { | |
| // MasterCard | |
| if (/^5[1-5]/.test(cardNumber)) { | |
| return 'mastercard'; | |
| } | |
| // Visa | |
| if (/^4/.test(cardNumber)) { | |
| return 'visa'; | |
| } | |
| // American Express | |
| if (/^3[47]/.test(cardNumber)) { | |
| return 'amex'; | |
| } | |
| // Unknown | |
| return 'unknown'; | |
| }; |
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