Random room name generator

randomRoomNameGenerator.js

var randomRoomNameGenerator = function () {
  // predefine the alphabet used.
  var alphabet = 'qwertyuiopasdfghjklzxcvbnm1234567890';

  // set the length of the room name
  var roomNameLength = 30;

  // initialize the room name as an empty string
  var roomName = '';

  // repeat this 30 times
  for (var i=0; i<roomNameLength; i++) {
    // get a random character from the alphabet
    var character = alphabet[Math.round(Math.random()*(alphabet.length-1))];

    // add the character to the roomName
    roomName = roomName + character;
  }

  // pre- and append appear.in URL elements
  roomName = 'https://appear.in/' + roomName + '?lite';

  // return the result
  return roomName;
}