How do you detect Credit card type based on the number using JavaScript? Simple solution using only code, no library required.
function getCardType (number) {
const re = {
electron: /^(4026|417500|4405|4508|4844|4913|4917)\d+$/,
maestro: /^(5018|5020|5038|5612|5893|6304|6759|6761|6762|6763|0604|6390)\d+$/,
dankort: /^(5019)\d+$/,
interpayment: /^(636)\d+$/,
unionpay: /^(62|88)\d+$/,
visa: /^4[0-9]{12}(?:[0-9]{3})?$/,
mastercard: /^(5[1-5][0-9]{14}|2(22[1-9][0-9]{12}|2[3-9][0-9]{13}|[3-6][0-9]{14}|7[0-1][0-9]{13}|720[0-9]{12}))$/,
amex: /^3[47][0-9]{13}$/,
diners: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
discover: /^6(?:011|5[0-9]{2})[0-9]{12}$/,
jcb: /^(?:2131|1800|35\d{3})\d{11}$/
}
for (var key in re) {
if (re[key].test(number)) {
return key
}
}
return 'unknown'
}
Test cards
UNIONPAY
8800000000000000
ELECTRON
4026000000000000
4175000000000000
4405000000000000
4508000000000000
4844000000000000
4913000000000000
4917000000000000
DANKORT
5019000000000000
MAESTRO
5018000000000000
5020000000000000
5038000000000000
5612000000000000
5893000000000000
6304000000000000
6759000000000000
6761000000000000
6762000000000000
6763000000000000
0604000000000000
6390000000000000
JCB
3528000000000000
3589000000000000
3529000000000000
INTERPAYMENT
6360000000000000
VISA
4916338506082832
4556015886206505
4539048040151731
4024007198964305
4716175187624512
MASTERCARD
5280934283171080
5456060454627409
5331113404316994
5259474113320034
5442179619690834
DISCOVER
6011894492395579
6011388644154687
6011880085013612
6011652795433988
6011375973328347
AMEX
345936346788903
377669501013152
373083634595479
370710819865268
371095063560404
Sources:
