How to make a password generator with javascript where i can toggle length, special characters, numbers, uppercase and lowercase

Question

function genPassword() {
    var chars = "0123456789abcdefghijklmnopqrstuvwxyz!@#$%^&*()ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    var passwordLength = prompt("Length:Enter a number between 8-128");
    var specialcharacters = prompt("Would you like special characters?");
    var numeric = prompt("Would you like numbers?");
    var upper = prompt("Would you like uppercase?");
    var lower = prompt("Would you like lowercase?");
    var password = "";
for (var i = 0; i <= passwordLength; i++) {
   var randomNumber = Math.floor(Math.random() * chars.length);
password += chars.substring(randomNumber, randomNumber +1);
  }
        document.getElementById("password").value = password;
}

When i click my generate btn i should get 5 prompts and the prompts should us that info to create the password like 8(for length), yes, no, no, yes.

Answer 1

• Start with four different strings, one for each group of characters
• Start with empty chars
• For each "yes", append the appropriate character group to chars
• Then pick at random from the constructed chars .