How to use the creditcards.card.format function in creditcards
To help you get started, we’ve selected a few creditcards examples, based on popular ways it is used in public projects.
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bendrucker / angular-credit-cards / src / number.js View on Github 
$element.on('input', function formatInput () {
var input = $element.val()
if (!input) return
var element = $element[0]
var formatted = card.format(card.parse(input))
var selectionEnd = element.selectionEnd
ngModel.$setViewValue(formatted)
ngModel.$render()
if (selectionEnd === input.length && input.length < formatted.length) {
selectionEnd = formatted.length
}
setCursorPostion(element, selectionEnd)
})
}creditcards
Utility methods for formatting and validating credit cards
