Trying to figure out how to take this Javascript code and make it generate a randomized password following the parameters set by the prompts (length, lowercase, uppercase, numbers, special characters.)

function randomNum(min, max) {

return Math.floor(Math.random() * (max - min + 1)) + min;

}

function getLength() {

var entry = '';

entry = prompt ("How long will your password be?");

entry = parseInt(entry);

if (entry >= 8 && entry <= 128) {

return entry;

} else {

window.alert("Try again. Please enter a number between 8 and 128");

}

}

function gatherChoices() {

var answers = {

lowercase: confirm("Will you be using lowercase letters?"),

uppercase: confirm("How about uppercase letters?"),

numbers: confirm("Numbers?"),

specialChar: confirm("Maybe some special characters?")

};

if (answers.lowercase || answers.uppercase || answers.numbers || answers.specialChar) {

return answers;

} else {

window.alert("You shall not pass! Please make at least one character selection.")

}

}

function generatePassword() {

var length = getLength();

var answers = gatherChoices();

var characters = {

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"],

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"],

numbers: ["1","2","3","4","5","6","7","8","9","0"],

specialChar: ["!","@","#","$","%","^","&","*","?","+","-","="]

};

}

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

function writePassword() {

var password = generatePassword();

var passwordText = document.querySelector("#password");

getLength.entry = generatePassword.length;

passwordText.value = password;

}

generateBtn.addEventListener("click", writePassword);