What is wrong with this code


#1

what is wrong with this code i m on same tutorial and facing same problrm pls help

var main = function(){
    $('.dropdown-toggle').click(function(){
       $('.dropdown-menu').toggle();
    
    });
    $('.arrow-next').click(function(){
       var currentSlide = $('.active-slide');
    $('.arrow-prev').click(function(){
        var currentSlide =$('.activeSlide');
    var prevSlide = currentSlide.prev();
    if(prevSlide.length === 0){
        prevSlide = $('.slide').last();
    } 
    currentSlide.fadeOut(duration).removeClass('active-slide');
    prevSlide.fadeIn(duration).addClass('active-slide');
    
});
       var nextSlide = currentSlide.next();
       var currentDot = $('.active-dot');
       var nextDot = currentDot.next();
       
        currentDot.removeClass('active-dot');
        nextDot.addClass('active-dot');
       
       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');
       currentSlide.fadeOut(600).removeClass('active-slide');
       prevSlide.fadeIn(600).addClass('active-slide');
      nextDot.addClass('active-dot');
    });
};
$(document).ready(main);

Lesson 9: Previous slide 2
#2

@megaace38179,

++ the build of FLIPBOARD script ++

The structure of the =main= function should look like

var main = function() {
     //Begin of =main= FUNCTION-BODY
        $('.dropdown-toggle').click(function(){
              $('.dropdown-menu').toggle();
        });

        $('.arrow-next').click( function() {
             //code which gets executed when =click=ed
        });
        $('.arrow-prev').click( function() {
             //code which gets executed when =click=ed
        });
     //End of =main= FUNCTION-BODY
};

And the =main= function should be executed when the document is fully loaded and READY

$(document).ready( main );

==============================

+++++ flipboard click Eventhandler structure
Within the =main= function

var main = function() {
     //Begin of =main= FUNCTION-BODY
       //your code
     //End of =main= FUNCTION-BODY
};
$(document).ready( main );

you are placing =click= Eventhandlers,
which are attached to specific HTML-Elements by using
a jQuery-Selector.like $('.arrow-prev')

var main = function() {
     //Begin of =main= FUNCTION-BODY
        $('.arrow-prev').click();
     //End of =main= FUNCTION-BODY
};
$(document).ready( main );

Now as a so-called argument of the =click= Eventhandler
you are placing a so-called anonymous function

var main = function() {
     //Begin of =main= FUNCTION-BODY
        $('.arrow-prev').click( function() {
             //code which gets executed when =click=ed
        });
     //End of =main= FUNCTION-BODY
};
$(document).ready( main );

======================================

+++++ 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


#3

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