Question

我想用PhotoSwipe构建一些简单的照片库：http://codepen.io/dimsemenov/pen/ZYbPJM。

所有代码都运行正常，但是当我尝试添加新的HTML时，某些功能（如上一个/下一个按钮）不起作用。

原始代码

<div class="my-gallery" itemscope itemtype="http://schema.org/ImageGallery">

<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
  <a href="https://farm3.staticflickr.com/2567/5697107145_a4c2eaa0cd_o.jpg" itemprop="contentUrl" data-size="1024x1024">
      <img src="https://farm3.staticflickr.com/2567/5697107145_3c27ff3cd1_m.jpg" itemprop="thumbnail" alt="Image description" />
  </a>
   <figcaption itemprop="caption description">Image caption  1</figcaption>

</figure>

<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
  <a href="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_b.jpg" itemprop="contentUrl" data-size="964x1024">
      <img src="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_m.jpg" itemprop="thumbnail" alt="Image description" />
  </a>
  <figcaption itemprop="caption description">Image caption 2</figcaption>
</figure>

我的照片库中的代码

  <div class="my-gallery" itemscope itemtype="http://schema.org/ImageGallery">

    <div class="col-sm-3 col-md-2 thumb-container" data-image="o3gx9ze57" data-hotlink="9x16er3a7" data-sid="s25">
        <div class="thumb">

            <figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
            <a href="https://farm3.staticflickr.com/2567/5697107145_a4c2eaa0cd_o.jpg" itemprop="contentUrl" data-size="1024x1024">
            <img src="https://farm3.staticflickr.com/2567/5697107145_3c27ff3cd1_m.jpg" itemprop="thumbnail" alt="Image description" />
            </a>
            <figcaption itemprop="caption description">Image caption  1</figcaption>

            </figure>

        </div>
    </div>

    <div class="col-sm-3 col-md-2 thumb-container" data-image="o3gx9ze57" data-hotlink="9x16er3a7" data-sid="s25">
        <div class="thumb">

<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
  <a href="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_b.jpg" itemprop="contentUrl" data-size="964x1024">
      <img src="https://farm2.staticflickr.com/1043/5186867718_06b2e9e551_m.jpg" itemprop="thumbnail" alt="Image description" />
  </a>
  <figcaption itemprop="caption description">Image caption 2</figcaption>
</figure>

            </div>

        </div>
</div>

我知道，问题来自我的JavaSrcipt代码，但我不知道修复它。

var initPhotoSwipeFromDOM = function(gallerySelector) {

// parse slide data (url, title, size ...) from DOM elements 
// (children of gallerySelector)
var parseThumbnailElements = function(el) {
    var thumbElements = el.childNodes,
        numNodes = thumbElements.length,
        items = [],
        figureEl,
        linkEl,
        size,
        item;

    for(var i = 0; i < numNodes; i++) {

        figureEl = thumbElements[i]; // <figure> element

        // include only element nodes 
        if(figureEl.nodeType !== 1) {
            continue;
        }

        linkEl = figureEl.children[0]; // <a> element

        size = linkEl.getAttribute('data-size').split('x');

        // create slide object
        item = {
            src: linkEl.getAttribute('href'),
            w: parseInt(size[0], 10),
            h: parseInt(size[1], 10)
        };



        if(figureEl.children.length > 1) {
            // <figcaption> content
            item.title = figureEl.children[1].innerHTML; 
        }

        if(linkEl.children.length > 0) {
            // <img> thumbnail element, retrieving thumbnail url
            item.msrc = linkEl.children[0].getAttribute('src');
        } 

        item.el = figureEl; // save link to element for getThumbBoundsFn
        items.push(item);
    }

    return items;
};

// find nearest parent element
var closest = function closest(el, fn) {
    return el && ( fn(el) ? el : closest(el.parentNode, fn) );
};

// triggers when user clicks on thumbnail
var onThumbnailsClick = function(e) {
    e = e || window.event;
    e.preventDefault ? e.preventDefault() : e.returnValue = false;

    var eTarget = e.target || e.srcElement;

    // find root element of slide
    var clickedListItem = closest(eTarget, function(el) {
        return (el.tagName && el.tagName.toUpperCase() === 'FIGURE');
    });

    if(!clickedListItem) {
        return;
    }

    // find index of clicked item by looping through all child nodes
    // alternatively, you may define index via data- attribute
    var clickedGallery = clickedListItem.parentNode,
        childNodes = clickedListItem.parentNode.childNodes,
        numChildNodes = childNodes.length,
        nodeIndex = 0,
        index;

    for (var i = 0; i < numChildNodes; i++) {
        if(childNodes[i].nodeType !== 1) { 
            continue; 
        }

        if(childNodes[i] === clickedListItem) {
            index = nodeIndex;
            break;
        }
        nodeIndex++;
    }



    if(index >= 0) {
        // open PhotoSwipe if valid index found
        openPhotoSwipe( index, clickedGallery );
    }
    return false;
};

// parse picture index and gallery index from URL (#&pid=1&gid=2)
var photoswipeParseHash = function() {
    var hash = window.location.hash.substring(1),
    params = {};

    if(hash.length < 5) {
        return params;
    }

    var vars = hash.split('&');
    for (var i = 0; i < vars.length; i++) {
        if(!vars[i]) {
            continue;
        }
        var pair = vars[i].split('=');  
        if(pair.length < 2) {
            continue;
        }           
        params[pair[0]] = pair[1];
    }

    if(params.gid) {
        params.gid = parseInt(params.gid, 10);
    }

    return params;
};

var openPhotoSwipe = function(index, galleryElement, disableAnimation, fromURL) {
    var pswpElement = document.querySelectorAll('.pswp')[0],
        gallery,
        options,
        items;

    items = parseThumbnailElements(galleryElement);

    // define options (if needed)
    options = {

        // define gallery index (for URL)
        galleryUID: galleryElement.getAttribute('data-pswp-uid'),

        getThumbBoundsFn: function(index) {
            // See Options -> getThumbBoundsFn section of documentation for more info
            var thumbnail = items[index].el.getElementsByTagName('img')[0], // find thumbnail
                pageYScroll = window.pageYOffset || document.documentElement.scrollTop,
                rect = thumbnail.getBoundingClientRect(); 

            return {x:rect.left, y:rect.top + pageYScroll, w:rect.width};
        }

    };

    // PhotoSwipe opened from URL
    if(fromURL) {
        if(options.galleryPIDs) {
            // parse real index when custom PIDs are used 
            // http://photoswipe.com/documentation/faq.html#custom-pid-in-url
            for(var j = 0; j < items.length; j++) {
                if(items[j].pid == index) {
                    options.index = j;
                    break;
                }
            }
        } else {
            // in URL indexes start from 1
            options.index = parseInt(index, 10) - 1;
        }
    } else {
        options.index = parseInt(index, 10);
    }

    // exit if index not found
    if( isNaN(options.index) ) {
        return;
    }

    if(disableAnimation) {
        options.showAnimationDuration = 0;
    }

    // Pass data to PhotoSwipe and initialize it
    gallery = new PhotoSwipe( pswpElement, PhotoSwipeUI_Default, items, options);
    gallery.init();
};

// loop through all gallery elements and bind events
var galleryElements = document.querySelectorAll( gallerySelector );

for(var i = 0, l = galleryElements.length; i < l; i++) {
    galleryElements[i].setAttribute('data-pswp-uid', i+1);
    galleryElements[i].onclick = onThumbnailsClick;
}

// Parse URL and open gallery if it contains #&pid=3&gid=1
var hashData = photoswipeParseHash();
if(hashData.pid && hashData.gid) {
    openPhotoSwipe( hashData.pid ,  galleryElements[ hashData.gid - 1 ], true, true );
}
};

//执行上面的功能 initPhotoSwipeFromDOM（ '我的画廊。'）;

如何解决这个问题？

现场演示：http://codepen.io/dimsemenov/pen/ZYbPJM

Answer 1

执行上面的函数initPhotoSwipeFromDOM（'。thumb'）; - 24小时前活着死去

@alive to die：not work

Answer 2

你的hashData（在L198中）是一个空对象（没有.pid）

资金photoswipeParseHash返回{}，所以L199中的if不是真的，这导致你的openPhotoSwipe没有被执行。

当我添加新的HTML标记时，javascript无法正常工作

2 个答案: