I don't really understand the if and else statement, can someone pls explain cuz I'm lost

Question

Number(document.getElementById("age").value);
  if (isNaN(age)) {
    voteable = "Input is not a number";
  } else {
    voteable = (age < 18) ? "Too

Answer 1

if you are beautifull
you have a lot of girls
else
you have none

// How simple is this ? ^^

Answer 2

isNaN will check if age value is a number or not.
NaN means Not a Number, you can see what qualify as NaN here ( https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NaN#Testing_against_NaN )

you can read it like this

if age is Not a Number