RandomPassword

randomPassword.js

const randomLetter = () => {
  const alphabet = 'abcdefghijklmnopqrstuvwxyz';
  return alphabet[Math.floor(Math.random() * alphabet.length)];
}

const randomNumber = () => {  
  return Math.floor(Math.random() * 10);
}

const randomSymbol = () => {
  const symbols = '!@#$%^&*(){}[]=<>/,.';
  return symbols[Math.floor(Math.random() * symbols.length)];
} 

const randomPassword = (length = 8) => {
  const passwordCharacters = [];
  for (let i = 0; i < length; i++) {
    const randomNum = Math.floor(Math.random() * 30)
    if (randomNum < 10) {
      const shouldUpperCase = Math.floor(Math.random() * 3) % 2 == 0;
      passwordCharacters.push(shouldUpperCase ? randomLetter().toUpperCase() : randomLetter());
    } else if (randomNum < 20) {
      passwordCharacters.push(randomNumber());
    } else{
      passwordCharacters.push(randomSymbol());
    }
  }
  return passwordCharacters.join('');
}
console.log(randomPassword(32))