Javascript 试图启动弹出窗口，但未捕获TypeError:$（…）.css（…）.velocity不是函数错误

显然，我对JavaScript和JQuery还不熟悉。。而且是这个网站的新成员

我知道这将是一个愚蠢的问题，但有人能找出我为什么会犯这个错误吗？我试着用谷歌搜索并阅读它。我几乎可以肯定这与js脚本的顺序有关

我在控制台中遇到的错误是

未捕获的TypeError:$..css…velocity不是一个函数 我使用的是fullpage.js、modernizer和jquery。velocity脚本位于main.js的第105行。我在网站上附加了一个链接以显示错误，当您单击图像底部时，弹出窗口将显示更多信息

如果我移动js脚本，我可以让它工作，但全屏js或导航栏无法工作。它应该像这个例子一样工作

提前感谢任何人的帮助

html

css2

main.js

    jQuery(document).ready(function($){
    //final width --> this is the quick view image slider width
    //maxQuickWidth --> this is the max-width of the quick-view panel
    var sliderFinalWidth = 400,
        maxQuickWidth = 900;

    //open the quick view panel
    $('.cd-trigger').on('click', function(event){
        var selectedImage = $(this).parent('.cd-item').children('img'),
            slectedImageUrl = selectedImage.attr('src');

        $('body').addClass('overlay-layer');
        animateQuickView(selectedImage, sliderFinalWidth, maxQuickWidth, 'open');

        //update the visible slider image in the quick view panel
        //you don't need to implement/use the updateQuickView if retrieving the quick view data with ajax
        updateQuickView(slectedImageUrl);
    });

    //close the quick view panel
    $('body').on('click', function(event){
        if( $(event.target).is('.cd-close') || $(event.target).is('body.overlay-layer')) {
            closeQuickView( sliderFinalWidth, maxQuickWidth);
        }
    });
    $(document).keyup(function(event){
        //check if user has pressed 'Esc'
        if(event.which=='27'){
            closeQuickView( sliderFinalWidth, maxQuickWidth);
        }
    });

    //quick view slider implementation
    $('.cd-quick-view').on('click', '.cd-slider-navigation a', function(){
        updateSlider($(this));
    });

    //center quick-view on window resize
    $(window).on('resize', function(){
        if($('.cd-quick-view').hasClass('is-visible')){
            window.requestAnimationFrame(resizeQuickView);
        }
    });

    function updateSlider(navigation) {
        var sliderConatiner = navigation.parents('.cd-slider-wrapper').find('.cd-slider'),
            activeSlider = sliderConatiner.children('.selected').removeClass('selected');
        if ( navigation.hasClass('cd-next') ) {
            ( !activeSlider.is(':last-child') ) ? activeSlider.next().addClass('selected') : sliderConatiner.children('li').eq(0).addClass('selected'); 
        } else {
            ( !activeSlider.is(':first-child') ) ? activeSlider.prev().addClass('selected') : sliderConatiner.children('li').last().addClass('selected');
        } 
    }

    function updateQuickView(url) {
        $('.cd-quick-view .cd-slider li').removeClass('selected').find('img[src="'+ url +'"]').parent('li').addClass('selected');
    }

    function resizeQuickView() {
        var quickViewLeft = ($(window).width() - $('.cd-quick-view').width())/2,
            quickViewTop = ($(window).height() - $('.cd-quick-view').height())/2;
        $('.cd-quick-view').css({
            "top": quickViewTop,
            "left": quickViewLeft,
        });
    } 

    function closeQuickView(finalWidth, maxQuickWidth) {
        var close = $('.cd-close'),
            activeSliderUrl = close.siblings('.cd-slider-wrapper').find('.selected img').attr('src'),
            selectedImage = $('.empty-box').find('img');
        //update the image in the gallery
        if( !$('.cd-quick-view').hasClass('velocity-animating') && $('.cd-quick-view').hasClass('add-content')) {
            selectedImage.attr('src', activeSliderUrl);
            animateQuickView(selectedImage, finalWidth, maxQuickWidth, 'close');
        } else {
            closeNoAnimation(selectedImage, finalWidth, maxQuickWidth);
        }
    }

    function animateQuickView(image, finalWidth, maxQuickWidth, animationType) {
        //store some image data (width, top position, ...)
        //store window data to calculate quick view panel position
        var parentListItem = image.parent('.cd-item'),
            topSelected = image.offset().top - $(window).scrollTop(),
            leftSelected = image.offset().left,
            widthSelected = image.width(),
            heightSelected = image.height(),
            windowWidth = $(window).width(),
            windowHeight = $(window).height(),
            finalLeft = (windowWidth - finalWidth)/2,
            finalHeight = finalWidth * heightSelected/widthSelected,
            finalTop = (windowHeight - finalHeight)/2,
            quickViewWidth = ( windowWidth * .8 < maxQuickWidth ) ? windowWidth * .8 : maxQuickWidth ,
            quickViewLeft = (windowWidth - quickViewWidth)/2;

        if( animationType == 'open') {
            //hide the image in the gallery
            parentListItem.addClass('empty-box');
            //place the quick view over the image gallery and give it the dimension of the gallery image
            $('.cd-quick-view').css({
                "top": topSelected,
                "left": leftSelected,
                "width": widthSelected,
            }).velocity({
                //animate the quick view: animate its width and center it in the viewport
                //during this animation, only the slider image is visible
                'top': finalTop+ 'px',
                'left': finalLeft+'px',
                'width': finalWidth+'px',
            }, 1000, [ 400, 20 ], function(){
                //animate the quick view: animate its width to the final value
                $('.cd-quick-view').addClass('animate-width').velocity({
                    'left': quickViewLeft+'px',
                    'width': quickViewWidth+'px',
                }, 300, 'ease' ,function(){
                    //show quick view content
                    $('.cd-quick-view').addClass('add-content');
                });
            }).addClass('is-visible');
        } else {
            //close the quick view reverting the animation
            $('.cd-quick-view').removeClass('add-content').velocity({
                'top': finalTop+ 'px',
                'left': finalLeft+'px',
                'width': finalWidth+'px',
            }, 300, 'ease', function(){
                $('body').removeClass('overlay-layer');
                $('.cd-quick-view').removeClass('animate-width').velocity({
                    "top": topSelected,
                    "left": leftSelected,
                    "width": widthSelected,
                }, 500, 'ease', function(){
                    $('.cd-quick-view').removeClass('is-visible');
                    parentListItem.removeClass('empty-box');
                });
            });
        }
    }
    function closeNoAnimation(image, finalWidth, maxQuickWidth) {
        var parentListItem = image.parent('.cd-item'),
            topSelected = image.offset().top - $(window).scrollTop(),
            leftSelected = image.offset().left,
            widthSelected = image.width();

        //close the quick view reverting the animation
        $('body').removeClass('overlay-layer');
        parentListItem.removeClass('empty-box');
        $('.cd-quick-view').velocity("stop").removeClass('add-content animate-width is-visible').css({
            "top": topSelected,
            "left": leftSelected,
            "width": widthSelected,
        });
    }
});

---

你没有加载velocity插件。很好发现。。因此，错误现在消失了。但我还是没有弹出窗口。它的工作原理是这样的，您将modernizr.js和script.js包含两次，一次在中，一次之后是无效位置-它应该在标记之前。@Nerdwood谢谢。我现在可以弹出它，但请查看更新的脚本。它现在弹出，但为什么它显示在页面顶部而不是框所在的部分？它显示在页面顶部，因为位置：固定；在cd上快速查看。您可以将.cd快速查看的位置：固定到位置：绝对，然后添加位置：相对于.section

  opacity:    0.5;
  z-index:    10;
}
.overlay.open {
  opacity: .9;
  visibility: visible;
  height: 100%;
}
.overlay.open li {
  -webkit-animation: fadeInRight .5s ease forwards;
          animation: fadeInRight .5s ease forwards;
  -webkit-animation-delay: .35s;
          animation-delay: .35s;
}
.overlay.open li:nth-of-type(2) {
  -webkit-animation-delay: .4s;
          animation-delay: .4s;
}
.overlay.open li:nth-of-type(3) {
  -webkit-animation-delay: .45s;
          animation-delay: .45s;
}
.overlay.open li:nth-of-type(4) {
  -webkit-animation-delay: .50s;
          animation-delay: .50s;
}
.overlay nav {
  position: relative;
  height: 70%;
  top: 50%;
  -webkit-transform: translateY(-50%);
      -ms-transform: translateY(-50%);
          transform: translateY(-50%);
  font-size: 50px;
  font-family: 'Vollkorn', serif;
  font-weight: 400;
  text-align: center;
}
.overlay ul {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  display: inline-block;
  position: relative;
  height: 100%;
}
.overlay ul li {
  display: block;
  height: 25%;
  height: calc(100% / 4);
  min-height: 50px;
  position: relative;
  opacity: 0;
}
.overlay ul li a {
  display: block;
  position: relative;
  color: #FFF;
  text-decoration: none;
  overflow: hidden;
}

.overlay ul li a:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0%;
  -webkit-transform: translateX(-50%);
      -ms-transform: translateX(-50%);
          transform: translateX(-50%);
  height: 3px;
  background: #FFF;
  -webkit-transition: .35s;
          transition: .35s;
}

@-webkit-keyframes fadeInRight {
  0% {
    opacity: 0;
    left: 20%;
  }
  100% {
    opacity: 1;
    left: 0;
  }
}

@keyframes fadeInRight {
  0% {
    opacity: 0;
    left: 20%;
  }
  100% {
    opacity: 1;
    left: 0;
  }
}

*, *::after, *::before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

*::after, *::before {
  content: '';
}

body {
  font-size: 100%;
  font-family: "PT Sans", sans-serif;
  color: #3e585f;
  background-color: #47374e;
}
body::after {
  /* dark overlay layer - visible when we fire .cd-quick-view */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(71, 55, 78, 0.8);
  visibility: hidden;
  opacity: 0;
  -webkit-transition: opacity .3s 0s, visibility 0s .3s;
  -moz-transition: opacity .3s 0s, visibility 0s .3s;
  transition: opacity .3s 0s, visibility 0s .3s;
}
@media only screen and (min-width: 1024px) {
  body.overlay-layer::after {
    visibility: visible;
    opacity: 1;
    -webkit-transition: opacity .3s 0s, visibility 0s 0s;
    -moz-transition: opacity .3s 0s, visibility 0s 0s;
    transition: opacity .3s 0s, visibility 0s 0s;
  }
}

a {
  color: #f82f53;
  text-decoration: none;
}

img {
  max-width: 100%;
}

/* --------------------------------

Modules - reusable parts of our design

-------------------------------- */
.cd-container {
  /* this class is used to give a max-width to the element it is applied to, and center it horizontally when it reaches that max-width */
  width: 90%;
  max-width: 1170px;
  margin: 0 auto;
}
.cd-container:after {
  content: "";
  display: table;
  clear: both;
}

/* --------------------------------

Main components

-------------------------------- */
html, body {
  height: 100%;
}

header {
  position: relative;
  height: 160px;
  line-height: 170px;
  text-align: center;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
header h1 {
  color: #ffffff;
  font-size: 20px;
  font-size: 1.25rem;
}
@media only screen and (min-width: 768px) {
  header {
    line-height: 180px;
  }
  header h1 {
    font-size: 26px;
    font-size: 1.625rem;
  }
}
@media only screen and (min-width: 1024px) {
  header {
    line-height: 220px;
  }
}

.cd-items {
  padding: 1em 0;
}
@media only screen and (min-width: 768px) {
  .cd-items {
    padding: 2em 0 0;
  }
}
@media only screen and (min-width: 1024px) {
  .cd-items {
    padding: 4em 0 0;
  }
}

.cd-item {
  position: relative;
  margin: 0 0 1em;
}
.cd-item > img {
  display: block;
  width: 100%;
}
@media only screen and (min-width: 768px) {
  .cd-item {
    width: 48%;
    float: left;
    margin: 0 4% 2em 0;
  }
  .cd-item:nth-child(2n) {
    margin-right: 0;
  }
}
@media only screen and (min-width: 1024px) {
  .cd-item {
    width: 22%;
    float: left;
    margin: 0 4% 2.8em 0;
  }
  .cd-item:nth-child(2n) {
    margin-right: 4%;
  }
  .cd-item:nth-child(4n) {
    margin-right: 0;
  }
  .cd-item.empty-box::after {
    /* box visible as placeholder when the .cd-quick-view zooms in */
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #392c3f;
  }
}

.cd-trigger {
  position: absolute;
  height: 50px;
  line-height: 50px;
  width: 100%;
  bottom: 0;
  left: 0;
  background: rgba(0, 0, 0, 0.1);
  text-align: center;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #ffffff;
  opacity: 0;
  visibility: hidden;
  -webkit-transition: opacity 0.2s, background-color 0.2s;
  -moz-transition: opacity 0.2s, background-color 0.2s;
  transition: opacity 0.2s, background-color 0.2s;
}
.no-touch .cd-trigger:hover {
  background: rgba(0, 0, 0, 0.2);
}
@media only screen and (min-width: 1024px) {
  .cd-trigger {
    /* always visible on small devices */
    visibility: visible;
    opacity: 1;
  }
}
@media only screen and (min-width: 1170px) {
  .cd-trigger {
    /* only visible on hover on big devices */
    opacity: 0;
  }
}

@media only screen and (min-width: 1170px) {
  .no-touch .cd-item:hover .cd-trigger {
    opacity: 1;
  }

  .touch .cd-item .cd-trigger {
    opacity: 1;
  }
}
.cd-quick-view {
  /* quick view non available on small devices */
  display: none;
}
@media only screen and (min-width: 1024px) {
  .cd-quick-view {
    display: block;
    position: fixed;
    max-width: 900px;
    visibility: hidden;
    /* Force Hardware Acceleration in WebKit */
    -webkit-transform: translateZ(0);
    -moz-transform: translateZ(0);
    -ms-transform: translateZ(0);
    -o-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    will-change: left, top, width;
    z-index: 1;
  }
  .cd-quick-view:after {
    content: "";
    display: table;
    clear: both;
  }
  .cd-quick-view.is-visible {
    /* class added when user clicks on .cd-trigger */
    visibility: visible;
  }
  .cd-quick-view.animate-width {
    /* class added at the end of the first zoom-in animation */
    background-color: #ffffff;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.2);
    -webkit-transition: box-shadow 0.3s;
    -moz-transition: box-shadow 0.3s;
    transition: box-shadow 0.3s;
  }
}

.cd-slider-wrapper {
  position: relative;
  display: inline-block;
  float: left;
}
.cd-slider-wrapper:after {
  content: "";
  display: table;
  clear: both;
}

.cd-slider {
  float: left;
}
.cd-slider li {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}
.cd-slider li img {
  display: block;
  width: 100%;
  max-width: 400px;
}
.cd-slider li.selected {
  position: relative;
  z-index: 3;
}
.add-content .cd-slider {
  margin-right: 3em;
}

.cd-slider-navigation {
  opacity: 0;
}
.add-content .cd-slider-navigation {
  opacity: 1;
}

.cd-slider-navigation li {
  position: absolute;
  top: 50%;
  bottom: auto;
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  -o-transform: translateY(-50%);
  transform: translateY(-50%);
  z-index: 3;
}
.cd-slider-navigation li:first-child {
  left: 0;
}
.cd-slider-navigation li:last-child {
  /* equal to the .cd-slider-wrapper margin-right */
  right: 3em;
}
.cd-slider-navigation li a {
  display: block;
  width: 40px;
  height: 50px;
  overflow: hidden;
  text-indent: 100%;
  white-space: nowrap;
  opacity: 0;
  /* Force Hardware Acceleration in WebKit */
  -webkit-transform: translateZ(0);
  -moz-transform: translateZ(0);
  -ms-transform: translateZ(0);
  -o-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transition: opacity 0.2s, background 0.2s;
  -moz-transition: opacity 0.2s, background 0.2s;
  transition: opacity 0.2s, background 0.2s;
}
.cd-slider-navigation li a::before, .cd-slider-navigation li a::after {
  /* create arrows in CSS */
  position: absolute;
  top: 18px;
  left: 14px;
  display: inline-block;
  background: #ffffff;
  height: 3px;
  width: 12px;
}
.cd-slider-navigation li a::before {
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
}
.cd-slider-navigation li a::after {
  -webkit-transform: translateY(7px) rotate(-45deg);
  -moz-transform: translateY(7px) rotate(-45deg);
  -ms-transform: translateY(7px) rotate(-45deg);
  -o-transform: translateY(7px) rotate(-45deg);
  transform: translateY(7px) rotate(-45deg);
}
.add-content .cd-slider-navigation li a {
  opacity: .2;
}
.no-touch .cd-slider-navigation li a:hover {
  background: rgba(71, 55, 78, 0.8);
  opacity: 1;
}
.touch .cd-slider-navigation li a {
  opacity: 1;
}
.cd-slider-navigation li:first-child a::before {
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  transform: rotate(-45deg);
}
.cd-slider-navigation li:first-child a::after {
  -webkit-transform: translateY(7px) rotate(45deg);
  -moz-transform: translateY(7px) rotate(45deg);
  -ms-transform: translateY(7px) rotate(45deg);
  -o-transform: translateY(7px) rotate(45deg);
  transform: translateY(7px) rotate(45deg);
}

.cd-item-info {
  position: absolute;
  padding: 3em 3em 3em 0;
  visibility: hidden;
  opacity: 0;
  -webkit-transition: opacity .3s, visibility 0s;
  -moz-transition: opacity .3s, visibility 0s;
  transition: opacity .3s, visibility 0s;
}
.cd-item-info h2 {
  font-size: 28px;
  font-size: 1.75rem;
}
.cd-item-info p {
  line-height: 1.6;
  margin: 1em 0;
  color: #67919c;
}
.cd-item-info .cd-item-action li {
  display: inline-block;
  margin-right: 1em;
}
.cd-item-info .cd-item-action li:first-child {
  margin-left: -4px;
}
.cd-item-info .add-to-cart {
  -webkit-appearance: none;
  -moz-appearance: none;
  -ms-appearance: none;
  -o-appearance: none;
  appearance: none;
  border-radius: 0.25em;
  border: none;
  padding: .6em 1.2em;
  background-color: #f82f53;
  color: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-family: "PT Sans", sans-serif;
  font-size: 16px;
  font-size: 1rem;
  cursor: pointer;
}
.add-content .cd-item-info {
  /* class added at the end of the width animation, used to show the content */
  position: relative;
  visibility: visible;
  opacity: 1;
}
.add-content .cd-item-info h2 {
  -webkit-animation: cd-slide-in 0.3s;
  -moz-animation: cd-slide-in 0.3s;
  animation: cd-slide-in 0.3s;
}
.add-content .cd-item-info p {
  -webkit-animation: cd-slide-in 0.4s;
  -moz-animation: cd-slide-in 0.4s;
  animation: cd-slide-in 0.4s;
}
.add-content .cd-item-info .cd-item-action {
  -webkit-animation: cd-slide-in 0.5s;
  -moz-animation: cd-slide-in 0.5s;
  animation: cd-slide-in 0.5s;
}

@-webkit-keyframes cd-slide-in {
  0% {
    -webkit-transform: translate3d(-40px, 0, 0);
  }
  100% {
    -webkit-transform: translate3d(0, 0, 0);
  }
}
@-moz-keyframes cd-slide-in {
  0% {
    -moz-transform: translate3d(-40px, 0, 0);
  }
  100% {
    -moz-transform: translate3d(0, 0, 0);
  }
}
@keyframes cd-slide-in {
  0% {
    -webkit-transform: translate3d(-40px, 0, 0);
    -moz-transform: translate3d(-40px, 0, 0);
    -ms-transform: translate3d(-40px, 0, 0);
    -o-transform: translate3d(-40px, 0, 0);
    transform: translate3d(-40px, 0, 0);
  }
  100% {
    -webkit-transform: translate3d(0, 0, 0);
    -moz-transform: translate3d(0, 0, 0);
    -ms-transform: translate3d(0, 0, 0);
    -o-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
  }
}
.cd-close {
  position: absolute;
  top: 10px;
  right: 10px;
  display: inline-block;
  width: 30px;
  height: 30px;
  /* image replacement */
  overflow: hidden;
  text-indent: 100%;
  white-space: nowrap;
  visibility: hidden;
  -webkit-transform: scale(0);
  -moz-transform: scale(0);
  -ms-transform: scale(0);
  -o-transform: scale(0);
  transform: scale(0);
  -webkit-transition: -webkit-transform .3s 0s, visibility 0s .3s;
  -moz-transition: -moz-transform .3s 0s, visibility 0s .3s;
  transition: transform .3s 0s, visibility 0s .3s;
}
.cd-close::before, .cd-close::after {
  /* close icon in css */
  position: absolute;
  top: 12px;
  left: 5px;
  display: inline-block;
  height: 4px;
  width: 20px;
  background: #47374e;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
.cd-close::before {
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
}
.cd-close::after {
  -webkit-transform: rotate(135deg);
  -moz-transform: rotate(135deg);
  -ms-transform: rotate(135deg);
  -o-transform: rotate(135deg);
  transform: rotate(135deg);
}
.no-touch .cd-close:hover {
  -webkit-transform: scale(1.2);
  -moz-transform: scale(1.2);
  -ms-transform: scale(1.2);
  -o-transform: scale(1.2);
  transform: scale(1.2);
}
.add-content .cd-close {
  visibility: visible;
  -webkit-transform: scale(1);
  -moz-transform: scale(1);
  -ms-transform: scale(1);
  -o-transform: scale(1);
  transform: scale(1);
  -webkit-transition: -webkit-transform .3s 0s, visibility 0s 0s;
  -moz-transition: -moz-transform .3s 0s, visibility 0s 0s;
  transition: transform .3s 0s, visibility 0s 0s;
}

    jQuery(document).ready(function($){
    //final width --> this is the quick view image slider width
    //maxQuickWidth --> this is the max-width of the quick-view panel
    var sliderFinalWidth = 400,
        maxQuickWidth = 900;

    //open the quick view panel
    $('.cd-trigger').on('click', function(event){
        var selectedImage = $(this).parent('.cd-item').children('img'),
            slectedImageUrl = selectedImage.attr('src');

        $('body').addClass('overlay-layer');
        animateQuickView(selectedImage, sliderFinalWidth, maxQuickWidth, 'open');

        //update the visible slider image in the quick view panel
        //you don't need to implement/use the updateQuickView if retrieving the quick view data with ajax
        updateQuickView(slectedImageUrl);
    });

    //close the quick view panel
    $('body').on('click', function(event){
        if( $(event.target).is('.cd-close') || $(event.target).is('body.overlay-layer')) {
            closeQuickView( sliderFinalWidth, maxQuickWidth);
        }
    });
    $(document).keyup(function(event){
        //check if user has pressed 'Esc'
        if(event.which=='27'){
            closeQuickView( sliderFinalWidth, maxQuickWidth);
        }
    });

    //quick view slider implementation
    $('.cd-quick-view').on('click', '.cd-slider-navigation a', function(){
        updateSlider($(this));
    });

    //center quick-view on window resize
    $(window).on('resize', function(){
        if($('.cd-quick-view').hasClass('is-visible')){
            window.requestAnimationFrame(resizeQuickView);
        }
    });

    function updateSlider(navigation) {
        var sliderConatiner = navigation.parents('.cd-slider-wrapper').find('.cd-slider'),
            activeSlider = sliderConatiner.children('.selected').removeClass('selected');
        if ( navigation.hasClass('cd-next') ) {
            ( !activeSlider.is(':last-child') ) ? activeSlider.next().addClass('selected') : sliderConatiner.children('li').eq(0).addClass('selected'); 
        } else {
            ( !activeSlider.is(':first-child') ) ? activeSlider.prev().addClass('selected') : sliderConatiner.children('li').last().addClass('selected');
        } 
    }

    function updateQuickView(url) {
        $('.cd-quick-view .cd-slider li').removeClass('selected').find('img[src="'+ url +'"]').parent('li').addClass('selected');
    }

    function resizeQuickView() {
        var quickViewLeft = ($(window).width() - $('.cd-quick-view').width())/2,
            quickViewTop = ($(window).height() - $('.cd-quick-view').height())/2;
        $('.cd-quick-view').css({
            "top": quickViewTop,
            "left": quickViewLeft,
        });
    } 

    function closeQuickView(finalWidth, maxQuickWidth) {
        var close = $('.cd-close'),
            activeSliderUrl = close.siblings('.cd-slider-wrapper').find('.selected img').attr('src'),
            selectedImage = $('.empty-box').find('img');
        //update the image in the gallery
        if( !$('.cd-quick-view').hasClass('velocity-animating') && $('.cd-quick-view').hasClass('add-content')) {
            selectedImage.attr('src', activeSliderUrl);
            animateQuickView(selectedImage, finalWidth, maxQuickWidth, 'close');
        } else {
            closeNoAnimation(selectedImage, finalWidth, maxQuickWidth);
        }
    }

    function animateQuickView(image, finalWidth, maxQuickWidth, animationType) {
        //store some image data (width, top position, ...)
        //store window data to calculate quick view panel position
        var parentListItem = image.parent('.cd-item'),
            topSelected = image.offset().top - $(window).scrollTop(),
            leftSelected = image.offset().left,
            widthSelected = image.width(),
            heightSelected = image.height(),
            windowWidth = $(window).width(),
            windowHeight = $(window).height(),
            finalLeft = (windowWidth - finalWidth)/2,
            finalHeight = finalWidth * heightSelected/widthSelected,
            finalTop = (windowHeight - finalHeight)/2,
            quickViewWidth = ( windowWidth * .8 < maxQuickWidth ) ? windowWidth * .8 : maxQuickWidth ,
            quickViewLeft = (windowWidth - quickViewWidth)/2;

        if( animationType == 'open') {
            //hide the image in the gallery
            parentListItem.addClass('empty-box');
            //place the quick view over the image gallery and give it the dimension of the gallery image
            $('.cd-quick-view').css({
                "top": topSelected,
                "left": leftSelected,
                "width": widthSelected,
            }).velocity({
                //animate the quick view: animate its width and center it in the viewport
                //during this animation, only the slider image is visible
                'top': finalTop+ 'px',
                'left': finalLeft+'px',
                'width': finalWidth+'px',
            }, 1000, [ 400, 20 ], function(){
                //animate the quick view: animate its width to the final value
                $('.cd-quick-view').addClass('animate-width').velocity({
                    'left': quickViewLeft+'px',
                    'width': quickViewWidth+'px',
                }, 300, 'ease' ,function(){
                    //show quick view content
                    $('.cd-quick-view').addClass('add-content');
                });
            }).addClass('is-visible');
        } else {
            //close the quick view reverting the animation
            $('.cd-quick-view').removeClass('add-content').velocity({
                'top': finalTop+ 'px',
                'left': finalLeft+'px',
                'width': finalWidth+'px',
            }, 300, 'ease', function(){
                $('body').removeClass('overlay-layer');
                $('.cd-quick-view').removeClass('animate-width').velocity({
                    "top": topSelected,
                    "left": leftSelected,
                    "width": widthSelected,
                }, 500, 'ease', function(){
                    $('.cd-quick-view').removeClass('is-visible');
                    parentListItem.removeClass('empty-box');
                });
            });
        }
    }
    function closeNoAnimation(image, finalWidth, maxQuickWidth) {
        var parentListItem = image.parent('.cd-item'),
            topSelected = image.offset().top - $(window).scrollTop(),
            leftSelected = image.offset().left,
            widthSelected = image.width();

        //close the quick view reverting the animation
        $('body').removeClass('overlay-layer');
        parentListItem.removeClass('empty-box');
        $('.cd-quick-view').velocity("stop").removeClass('add-content animate-width is-visible').css({
            "top": topSelected,
            "left": leftSelected,
            "width": widthSelected,
        });
    }
});