parseInt always returns NaN?

Question

long story short, i was trying to validate a phone field. ive added the isNaN and parseInt for checking the \" \" in the field but tha

Answer 1

I've seen Number() suggested, but that will still allow things like -21 or 123.456. The best way to check for the absence of non-digits in a string is like this:

function hasNonDigit(str){
  return /\D/g.test(str.toString());
}

console.log(hasNonDigit("123-456-7890"));
console.log(hasNonDigit("1234567890"));