创建垂直图像轮播

Question

I'm trying to create a custom vertical image carousel because I can't use any plugins out there due to the js events attached to the images which I need to retain and the only way that would work for me is to create custom carousel.

Functionalities

• Image carousel does have 3 equal sizes in the viewport.
• Image carousel does have next/previous button which allow you to view/select more images.
• The next/previous button allows only one step at a time, meaning it will not select the next set of images and display it in the viewport.

• Carousel offers you to select any images in the viewport and this will sync when the next/prev button is clicked

All functionalities listed above is implemented already.

PROBLEM

The last image will not snap/stop before the next button, as it will create blank space in between.

JS Code

$(function(){
        var image_height = 0;
        var gallery_offset = 0;
        var image_count = $('img.thumbnail').length;
        var click_count = 0;
        var image_height = 0;
        var last_images_count = 0;

        $('.gallery-container a').click(function(){
          $('.gallery-container a').removeClass('active')
            $(this).addClass('active');

        });

        jQuery('.thumbnail').each(function(){
          $(this).on('load', function(){ image_height = $(this).parent().outerHeight(); });
          image_height = $(this).parent().outerHeight();
        })

        // Disable arrows if the images count is 3 below
        if(image_count <= 3) {
            $('.product-more-pictures .up, .product-more-pictures .down').addClass('disabled')
            click_count = 0;
        }

        // Set the first image as active
        jQuery('.gallery-container img.thumbnail').first().click();
        var thumb_active = jQuery('.gallery-container .active');

        $('.gallery-container a').on('click', function() {
            thumb_active = jQuery('.gallery-container .active');
        });

        $('.product-more-pictures .down').on('click', function (e) {
            $('.product-more-pictures .up').removeClass('disabled')
            if(thumb_active.nextAll(':lt(1)').length) {
              thumb_active.nextAll(':lt(1)').children().click()
              thumb_active = jQuery('.gallery-container .active');

            } 

            if( ! thumb_active.next().length) {
              $(this).addClass('disabled')
            } else {
              $(this).removeClass('disabled');
            }

            if (click_count < image_count) {
                click_count = click_count + 1;

                update_gallery('down');
            }



        });

        $('.product-more-pictures .up').on('click', function () {
            $('.product-more-pictures .down').removeClass('disabled')
            if(thumb_active.prevAll(':lt(1)').length) {
              thumb_active.prevAll(':lt(1)').children().click()
              thumb_active = jQuery('.gallery-container .active');
            }

            if( ! thumb_active.prev().length) {
              $(this).addClass('disabled')
            } else {
              $(this).removeClass('disabled');
            }

            if (click_count > 0) {
                click_count = click_count - 1;

                update_gallery('up');

            }
        });

        function update_gallery(direction) {         
            gallery_offset = click_count * image_height;
            last_images_count = thumb_active.nextAll().length;

            $(".gallery-container").animate({
              'top': '-' + gallery_offset + 'px'
            }, 800);

        }

});

Fiddle : https://jsfiddle.net/qrvrdjch/6/

Any help would be greatly appreciated :)

Answer 1

Try this... you need to initialize the click count as -1, and change the if (click_count < image_count) to this "if (click_count < image_count - 3)" since on load default selected image is first, so this one will serve your need I guess NB: no change required in css and HTML

$(function(){
    var image_height = 0;
    var gallery_offset = 0;
    var image_count = $('img.thumbnail').length;
    var click_count = -1;
    var image_height = 0;
    var last_images_count = 0;

    $('.gallery-container a').click(function(){
      $('.gallery-container a').removeClass('active')
        $(this).addClass('active');

    });

    jQuery('.thumbnail').each(function(){
      $(this).on('load', function(){ image_height = $(this).parent().outerHeight(); });
      image_height = $(this).parent().outerHeight();
    })

    // Disable arrows if the images count is 3 below
    if(image_count <= 3) {
        $('.product-more-pictures .up, .product-more-pictures .down').addClass('disabled')
        click_count = 0;
    }

    // Set the first image as active
    jQuery('.gallery-container img.thumbnail').first().click();
    var thumb_active = jQuery('.gallery-container .active');

    $('.gallery-container a').on('click', function() {
        thumb_active = jQuery('.gallery-container .active');
    });

    $('.product-more-pictures .down').on('click', function (e) {
        $('.product-more-pictures .up').removeClass('disabled')
        if(thumb_active.nextAll(':lt(1)').length) {
          thumb_active.nextAll(':lt(1)').children().click()
          thumb_active = jQuery('.gallery-container .active');

        } 

        if( ! thumb_active.next().length) {
          $(this).addClass('disabled')
        } else {
          $(this).removeClass('disabled');
        }
        if (click_count < image_count - 3) {
            console.log(image_count)
            console.log(click_count)
            click_count = click_count + 1;

            update_gallery('down');
        }



    });

    $('.product-more-pictures .up').on('click', function () {
        $('.product-more-pictures .down').removeClass('disabled')
        if(thumb_active.prevAll(':lt(1)').length) {
          thumb_active.prevAll(':lt(1)').children().click()
          thumb_active = jQuery('.gallery-container .active');
        }

        if( ! thumb_active.prev().length) {
          $(this).addClass('disabled')
        } else {
          $(this).removeClass('disabled');
        }

        if (click_count > 0) {
            click_count = click_count - 1;

            update_gallery('up');

        }
    });

    function update_gallery(direction) {         
        gallery_offset = click_count * image_height;
        last_images_count = thumb_active.nextAll().length;

        $(".gallery-container").animate({
          'top': '-' + gallery_offset + 'px'
        }, 800);

    }

});

Answer 2

You are almost there. You just need to edit one condition. Change "if (click_count < image_count)" under click event of down button(line 48 in JSFiddle) to "if (click_count < image_count-3)"

 $(function(){ var image_height = 0; var gallery_offset = 0; var image_count = $('img.thumbnail').length; var click_count = 0; var image_height = 0; var last_images_count = 0; $('.gallery-container a').click(function(){ $('.gallery-container a').removeClass('active') $(this).addClass('active'); }); jQuery('.thumbnail').each(function(){ $(this).on('load', function(){ image_height = $(this).parent().outerHeight(); }); image_height = $(this).parent().outerHeight(); }) // Disable arrows if the images count is 3 below if(image_count <= 3) { $('.product-more-pictures .up, .product-more-pictures .down').addClass('disabled') click_count = 0; } // Set the first image as active jQuery('.gallery-container img.thumbnail').first().click(); var thumb_active = jQuery('.gallery-container .active'); $('.gallery-container a').on('click', function() { thumb_active = jQuery('.gallery-container .active'); }); $('.product-more-pictures .down').on('click', function (e) { $('.product-more-pictures .up').removeClass('disabled') if(thumb_active.nextAll(':lt(1)').length) { thumb_active.nextAll(':lt(1)').children().click() thumb_active = jQuery('.gallery-container .active'); } if( ! thumb_active.next().length) { $(this).addClass('disabled') } else { $(this).removeClass('disabled'); } if (click_count < image_count-3) { click_count = click_count + 1; update_gallery('down'); } }); $('.product-more-pictures .up').on('click', function () { $('.product-more-pictures .down').removeClass('disabled') if(thumb_active.prevAll(':lt(1)').length) { thumb_active.prevAll(':lt(1)').children().click() thumb_active = jQuery('.gallery-container .active'); } if( ! thumb_active.prev().length) { $(this).addClass('disabled') } else { $(this).removeClass('disabled'); } if (click_count > 0) { click_count = click_count - 1; update_gallery('up'); } }); function update_gallery(direction) { gallery_offset = click_count * image_height; last_images_count = thumb_active.nextAll().length; $(".gallery-container").animate({ 'top': '-' + gallery_offset + 'px' }, 800); } }); 

 .product-more-pictures a { display: block; text-align: center; } .product-more-pictures a.disabled { pointer-events: none !important; cursor: default; visibility: visible !important; background: #C3C3C3; } .product-more-pictures a.down.disabled:before, .product-more-pictures a.up.disabled:before{ content: ' '; background: rgba(255, 255, 255, 0.42); position: absolute; height: 100%; width: 100%; left: 0px; bottom: 0px; } .product-more-pictures { text-align: right; height: 549px; width: 111px; overflow: hidden; position: relative; } .gallery-container { position: relative; padding: 30px 0px; } .gallery-container img { margin-bottom: 0px; } #product-photos .product-more-pictures { width: 18.516667%; } .product-more-pictures .up, .product-more-pictures .down { position: absolute; background: #999; padding: 0px; width: 100%; text-align: center; z-index: 80; color: #fff; padding: 5px 10px; } .product-more-pictures .up { top: 0px; } .product-more-pictures .down { bottom: 0px; } .product-more-pictures a.active img { border: solid 1px rgba(95, 95, 95,0.75) !important; } .product-more-pictures .icon-chevron-up, .product-more-pictures .icon-chevron-down { color: #fff !important; font-size: 21px; position: relative; } .product-more-pictures .icon-chevron-up { top: 0px; } .zoomContainer { z-index: 999; } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="product-more-pictures desktop-3"> <a href="#" class="up">up</a> <div class="gallery-container"> <a href="#"> <img class="thumbnail" src="//cdn.shopify.com/s/files/1/0190/3782/products/Name_it_to_Win_It_11-27_027_compact.jpg?v=1451925772" alt="Sheer Perfection Tunic"> </a> <a href="#"> <img class="thumbnail" src="//cdn.shopify.com/s/files/1/0190/3782/products/Name_it_to_Win_It_11-27_111_compact.jpg?v=1451925773"alt="Sheer Perfection Tunic"> </a> <a href="#"> <img class="thumbnail" src="//cdn.shopify.com/s/files/1/0190/3782/products/Name_it_to_Win_It_11-27_194_compact.jpg?v=1451925774" alt="Sheer Perfection Tunic"> </a> <a href="#" > <img class="thumbnail" src="//cdn.shopify.com/s/files/1/0190/3782/products/Name_it_to_Win_It_11-27_029_compact.jpg?v=1451925774" alt="Sheer Perfection Tunic"> </a> <a href="#"> <img class="thumbnail" src="//cdn.shopify.com/s/files/1/0190/3782/products/Name_it_to_Win_It_11-27_095_compact.jpg?v=1451925775" data-image-id="8200864135" alt="Sheer Perfection Tunic"> </a> <a href="#"> <img class="thumbnail" src="//cdn.shopify.com/s/files/1/0190/3782/products/Name_it_to_Win_It_11-27_135_compact.jpg?v=1451925776" data-image-id="8200864327" alt="Sheer Perfection Tunic"> </a> <a href="#" > <img class="thumbnail" src="//cdn.shopify.com/s/files/1/0190/3782/products/Name_it_to_Win_It_11-27_149_compact.jpg?v=1451925776" data-image-id="8200864775" alt="Sheer Perfection Tunic"> </a> <a href="#" > <img class="thumbnail" src="//cdn.shopify.com/s/files/1/0190/3782/products/Name_it_to_Win_It_11-27_152_compact.jpg?v=1451925777" data-image-id="8200865671" alt="Sheer Perfection Tunic"> </a> <a href="#"> <img class="thumbnail" src="//cdn.shopify.com/s/files/1/0190/3782/products/Name_it_to_Win_It_11-27_159_compact.jpg?v=1451925778" data-image-id="8200866183" alt="Sheer Perfection Tunic"> </a> </div> <a href="#" class="down">down</a> </div> 

Answer 3

 $(function(){ var image_height = 0; var gallery_offset = 0; var image_count = $('img.thumbnail').length; var image_show = 3; var click_count = 0; var image_height = 0; var last_images_count = 0; $('.gallery-container a').click(function(){ $('.gallery-container a').removeClass('active') $(this).addClass('active'); }); jQuery('.thumbnail').each(function(){ $(this).on('load', function(){ image_height = $(this).parent().outerHeight(); }); image_height = $(this).parent().outerHeight(); }) // Disable arrows if the images count is 3 below if(image_count <= 3) { $('.product-more-pictures .up, .product-more-pictures .down').addClass('disabled') click_count = 0; } // Set the first image as active jQuery('.gallery-container img.thumbnail').first().click(); var thumb_active = jQuery('.gallery-container .active'); $('.gallery-container a').on('click', function() { thumb_active = jQuery('.gallery-container .active'); }); $('.product-more-pictures .down').on('click', function (e) { $('.product-more-pictures .up').removeClass('disabled') if(thumb_active.nextAll(':lt(1)').length) { thumb_active.nextAll(':lt(1)').children().click() thumb_active = jQuery('.gallery-container .active'); } if( ! thumb_active.next().length || click_count > (image_count-image_show)) { $(this).addClass('disabled') } else { $(this).removeClass('disabled'); } if (click_count < (image_count-image_show)) { click_count = click_count+1; update_gallery('down'); } }); $('.product-more-pictures .up').on('click', function () { $('.product-more-pictures .down').removeClass('disabled') if(thumb_active.prevAll(':lt(1)').length) { thumb_active.prevAll(':lt(1)').children().click() thumb_active = jQuery('.gallery-container .active'); } if( ! thumb_active.prev().length) { $(this).addClass('disabled') } else { $(this).removeClass('disabled'); } if (click_count > 0) { click_count = click_count - 1; update_gallery('up'); } }); function update_gallery(direction) { gallery_offset = click_count * image_height; last_images_count = thumb_active.nextAll().length; $(".gallery-container").animate({ 'top': '-' + gallery_offset + 'px' }, 800); } }); 

Hi,

I have added one more veriable image_show=3 for handle image count.