Question

I want to make a bit of code that will check the value of an input box, count how many letters there are in the input box and if the value is divisable by 4 then to insert a –

Its so when the user is entering a code, in automatically inserts – after every 4 letters 🙂

Thanks

Answer 1

$("input").keyup(function () {
  if(this.value.replace(/-/g, "").length % 4 == 0) {
     this.value += "-";
  }
});