script.js

//Arrays for all possible characters to be included in password
var upperCase = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'];
var lowerCase = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
var number = ['0','1','2','3','4','5','6','7','8','9'];
var symbol = ['~','!','@','#','$','%','^','&','*','(',')','_','+','`','-','=','/','.',','];


function generateOptions() {
  var passLength = window.prompt("Enter password length (8-128 characters)");

  // If unacceptable response given, create an alert
  if (!passLength >=8 || !passLength <=128) {
    alert("That is not an answer I can use");
    return;
  } 
  
  //Prompt for character types
  var includeUpperCase = confirm("Do you want to include upper case letters?");
  var includeLowerCase = confirm("Do you want to include lower case letters?");
  var includeNumber = confirm("Do you want to include numbers?");
  var includeSymbol = confirm("Do you want to include special characters?");

  //If no character types are selected, create an alert
  if (!includeUpperCase && !includeLowerCase && !includeNumber && !includeSymbol) {
    alert("Your password must contain at least one character type");
    return;
  }

  var questionOptions = {
    length: length,
    symbols: includeSymbol,
    numeric: includeNumber,
    lowerCase: includeLowerCase,
    upperCase: includeUpperCase
  }

  return questionOptions;
}


//Defining pool of characters to include in generated password
var characterOptions = [];

if includeUpperCase() {
  characterOptions.concat(upperCase);
}
if includeLowerCase() {
  characterOptions.concat(lowerCase);
}
if includeNumber() {
  characterOptions.concat(number);
}
if includeSymbol() {
  characterOptions.concat(symbol);
}

//Removing quotation marks from string
var characterPool = characterOptions.join('');

//Generating password to appropriate length
finalPass = [];
for(var i=0; i < passLength; i++) {
  var charSelect = Math.floor(Math.random() * characterPool.length);
  finalPass.push(characterPool[charSelect])
}

// Assignment Code
var generateBtn = document.querySelector("#generate");

// Write password to the #password input
function writePassword() {
  var password = generatePassword();
  var passwordText = document.querySelector("#password");
  passwordText.textContent = password;

}

// Add event listener to button
generateBtn.addEventListener("click", generateOptions);