Format credit card number

Question

How to format and validate a credit card number with spaces between each 4 digit while typing:

eg: 4464 6846 4354 3564

I have tried:

Answer 1

Format credit card number will be 16 digits and having automatic spacing between them will get by trying the below code for me. try it once

handlecard(text) {
    let formattedText = text.split(' ').join('');
    if (formattedText.length <= 16) {
      if (formattedText.length > 0) {
        formattedText = formattedText.match(new RegExp('.{1,4}', 'g')).join(' ');
      }
    } else {
      alert("plz stop here")
    }
    this.setState({ creditCard: formattedText });
    return formattedText;
  }