How to remove the input whitespaces when entering a card number?

[stanleynik]

But I would like to keep the whitespaces in the card

[melloware]

There is nothing built in so you will have to code this yourself in Javascript

[NikhilMali-98]

To remove whitespaces from a card number input in a programming language like JavaScript, we can use the replace function to replace all whitespace characters with an empty string.

Example :
// Assuming cardNumber is the input containing whitespace
let cardNo = "1234 5678 9012 3456";

// Remove whitespaces
let cleanedCardNo = cardNumber.replace(/\s/g, '');

console.log(cleanedCardNo);

In this example, the regular expression \s matches any whitespace character, and the g flag ensures a global search, replacing all occurrences. The result is a card number without any whitespaces.