"crdit card input format" Code Answer's
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crdit card input format
var myInput = document.querySelector("#myInput");
myInput.addEventListener("input", updateFunpassInputCode);
function updateInputCode(e) {
var cardNumber = myInput.value;
// Do not allow users to write invalid characters
var formattedCardNumber = cardNumber.replace(/[^\d]/g, "");
var formattedCardNumber = formattedCardNumber.substring(0, 12);
// Split the card number is groups of 4
var cardNumberSections = formattedCardNumber.match(/\d{1,4}/g);
if (cardNumberSections !== null) {
formattedCardNumber = cardNumberSections.join('-');
}
// If the formmattedCardNumber is different to what is shown, change the value
if (cardNumber !== formattedCardNumber) {
myInput.value = formattedCardNumber;
}
}
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