[9] Previous Slide


#1



I got this message, "Remember to fade in the previous slide and add the 'active-slide' class." Anyone can help me, and show me where I got wrong.


Replace this line with your code. 
var main = function(){
$('.arrow-next').click(function() {
  var currentSlide = $('.active-slide');
  var nextSlide = currentSlide.next();

  var currentDot = $('.active-dot');
  var nextDot = currentDot.next();

  if(nextSlide.length == 0) {
    nextSlide = $('.slide').first();
    nextDot = $('.dot').first();
  }
  currentSlide.fadeOut(600).removeClass('active-slide');
  nextSlide.fadeIn(600).addClass('active-slide');
  
  currentDot.removeClass('active-dot');
  nextDot.addClass('active-dot');
});
$('.arrow-prev').click(function(){
    var currentSlide = $('.active-slide');
    var prevSlide = currentSlide.prev();
    
    currentSlide.fadeOut(600).removeClass('active-slide');
    prevSlide.fadeIn(600).addClass('active-slide');
    });
};

$(document).ready(main)


#2

@objectslayer85768,

+++++ flipboard the next && prev steps
You will have to keep a strict order in your code.....

s t e p s - - f o r - - n e x t S l i d e
-1
-1a create a selection of nextSlide (2 steps, capture 'active-slide, capture next() slide )'
-1b create a selection of nextDot
-2 check if selection of nextSlide is EMPTY
-2a if EMPTY change nextSlide selection to first slide
-2b and change nextDot selection to first Dot
-3 swap -active-slide- and -active-dot- class from current to next
Step3 is done by

   currentSlide.fadeOut(600).removeClass('active-slide');
   nextSlide.fadeIn(600).addClass('active-slide');
   currentDot.removeClass('active-dot');
   nextDot.addClass('active-dot');

s t e p s - - f o r - - p r e v S l i d e
-1
-1a create a selection of prevSlide
-1b create a selection of prevDot
-2 check if selection of prevSlide is EMPTY
-2a if EMPTY change prevSlide selection to last slide
-2b and change prevDot selection to last Dot
-3 swap -active-slide- and -active-dot- class from current to prev
Step3 is done by

    currentSlide.fadeOut(600).removeClass('active-slide');
    prevSlide.fadeIn(600).addClass('active-slide');
    currentDot.removeClass('active-dot');
    prevDot.addClass('active-dot');

+++++++++++++++++++++++++++++++++++++
++ jquery length explained AND DOM pictures of flipboard
https://www.codecademy.com/forum_questions/5615308ab62548021c0000e4