Created
May 22, 2023 15:35
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getCreditCardType
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| function getCreditCardType(cc) { | |
| let amex = new RegExp('^3[47][0-9]{0,13}$'); | |
| let visa = new RegExp('^4[0-9]{0,12}(?:[0-9]{3})?$'); | |
| let mastercard = new RegExp('^5[1-5][0-9]{0,14}$'); | |
| let mastercard2 = new RegExp('^2[2-7][0-9]{0,14}$'); | |
| let disco1 = new RegExp('^6011[0-9]{0,12}[0-9]*$'); | |
| let disco2 = new RegExp('^62[24568][0-9]{0,13}[0-9]*$'); | |
| let disco3 = new RegExp('^6[45][0-9]{0,14}[0-9]*$'); | |
| if (visa.test(cc)) { | |
| return 'VISA'; | |
| } | |
| if (amex.test(cc)) { | |
| return 'AMEX'; | |
| } | |
| if (mastercard.test(cc) || mastercard2.test(cc)) { | |
| return 'MASTERCARD'; | |
| } | |
| if (disco1.test(cc) || disco2.test(cc) || disco3.test(cc)) { | |
| return 'DISCOVER'; | |
| } | |
| return undefined; | |
| } |
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