Credit Card Number

Formats the credit card card number:

• Limits to 16 numbers
• Restricts input to numbers
• Includes a space between every 4 digits
• American Express formatting support
• Adds a class of the card type (i.e. 'visa') to the input

$('input.credit_card_number').formance('format_credit_card_number');

Validates the credit card number:

• Validates numbers
• Validates Luhn algorithm
• Validates length

$('input.credit_card_expiry').formance('validate_credit_card_number');

//examples
$("<input value='4242424242424242' />").formance('validate_credit_card_number');   // true
$("<input value='4242 4242 4242 4242' />").formance('validate_credit_card_number');   // true
$("<input value='4242-4242-4242-4242' />").formance('validate_credit_card_number');   // true
$("<input value='4242' />").formance('validate_credit_card_number');   // false

This field includes a special helper function to retrieve the credit card type. It recognizes

• visa
• mastercard
• discover
• amex
• dinersclub
• maestro
• laser
• unionpay

The function will return null if the card type can't be determined.

$.formance.creditCardType('4242 4242 4242 4242') // 'visa'

Make sure to read about the credit card autocomplete recommendations.