Created
March 3, 2017 14:27
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A function which returns an object based on the credit card number with credit card issuer properties
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| function getCreditCardIssuer(number) { | |
| number = number.toString(); | |
| if (/^4[0-9]{12}(?:[0-9]{3})?$/.test(number)) { // Visa | |
| return { | |
| issuer : 'Visa', | |
| cidLength : 3, | |
| length : 16 | |
| }; | |
| } else if (/^5[1-5][0-9]{14}$/.test(number)) { // MasterCard | |
| return { | |
| issuer : 'MasterCard', | |
| cidLength : 3, | |
| length : 16 | |
| }; | |
| } else if (/^3[47][0-9]{13}$/.test(number)) { // American Express | |
| return { | |
| issuer : 'American Express', | |
| cidLength : 4, | |
| length : 15 | |
| }; | |
| } else if (/^6(?:011|5[0-9]{2})[0-9]{12}$/.test(number)) { // Discover | |
| return { | |
| issuer : 'Discover', | |
| cidLength : 3, | |
| length : 16 | |
| }; | |
| } | |
| return false; | |
| } |
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