// Variables
// Initializing lists
var title = getColumn("Books", "Title");
var author = getColumn("Books", "Author");
var genre = getColumn("Books", "Genre");
 
//Initializing Filtered Lists
var selectedTitle = [];
var selectedAuthor = [];
var genres;
 
//When you click the butttons, the variables change values and take you to the designated screen and shows you a recommended book
onEvent("GenreDD", "change", function( ) {
  genres = getText("GenreDD");
});
onEvent("Go", "click", function( ) {
  setScreen("bookScreen");
  if (genres=="Mystery") {
    setText("title2", "Mystery");
  } else if ((genres=="Fantasy")) {
    setText("title2", "Fantasy");
  } else if ((genres=="Horror")) {
    setText("title2", "Horror");
  }
  filter();
});
onEvent("homeButton1", "click", function( ) {
  setScreen("titleScreen");
});
 
 
//Filter Function
//If the selected genre matches the genre in the list, append the Titles and Authors to the appropriate list 
function filter(input) {
  selectedTitle = [];
  selectedAuthor = [];
  for (var i = 0; i < genre.length; i++) {
    if (genre == input) {
      appendItem(selectedTitle, title[i]);
      appendItem(selectedAuthor, author[i]);
    }
  }
  console.log(selectedTitle);
}
function updateScreen() {
  var randomindex = randomNumber(0, 3);
}
 
 

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