script.js

console.log('Hello World');
//452.458.458-45
function generateCPF() {
  const number1 = generateRandomNumber();
  const number2 = generateRandomNumber();
  const number3 = generateRandomNumber();
  const checkDigit1 = calculateCheckDigit(number1, number2, number3);
  const checkDigit2 = calculateCheckDigit(
    number1,
    number2,
    number3,
    checkDigit1,
  );
  let cpf;
  if (document.getElementById('dotsAndDashesTrue').checked) {
    cpf = `${number1}.${number2}.${number3}-${checkDigit1}${checkDigit2}`;
  } else {
    cpf = `${number1}${number2}${number3}${checkDigit1}${checkDigit2}`;
  }

  document.getElementById('inputResult').value = cpf;
}

function generateRandomNumber() {
  const random = Math.floor(Math.random() * 999);
  const formatted = random.toString().padStart(3, '0');
  return formatted;
}

function calculateCheckDigit(number1, number2, number3, number4) {
  const numbers = `${number1}${number2}${number3}`.split('');
  if (number4 !== undefined) {
    numbers.push(number4);
  }

  let sum = 0;
  let index = 0;
  const initialNumber = number4 !== undefined ? 11 : 10;

  for (let i = initialNumber; i >= 2; i--) {
    sum += parseInt(numbers[index]) * i;
    index++;
  }
  const rest = sum % 11;
  if (rest < 2) {
    return 0;
  } else {
    return 11 - rest;
  }
}