javascript - 选择框在应用 css/javascript 时失去功能

Question

我有一个用于对图像进行分类的选择框，但是一旦我对其应用了样式，选择框就会停止将用户引导至类别。

当我删除 HTML 头部的 class=desktop 时，选择框再次起作用。

Here is a jsbin以下:

function shuffle(e){var t=e.length,n,r;while(0!==t){r=Math.floor(Math.random()*t);t-=1;n=e[t];e[t]=e[r];e[r]=n}return e}function is(e,t){var n=Object.prototype.toString.call(t).slice(8,-1);return t!==undefined&&t!==null&&n===e}function updateVideosList(e){var t;var n=[];$.map(videos,function(r){if(is("String",r.category)){if(r.category===e){n.push(r)}}else{for(t=0;t<r.category.length;t++){if(r.category[t]===e){n.push(r)}}}});var r=shuffle(n.length>0?n:videos);var i=$("div#videos > ul");i.html("");r.forEach(function(e,t){var n=$("<li>");var r="";e.sources.forEach(function(e){r+=e.type+": "+e.src+"; "});n.text(r);i.append(n)});return r}function chooseRandomVideoFromList(){var e=Math.floor(Math.random()*currentList.length);var t=currentList[e];var n=$("video");n.html("");t.sources.forEach(function(e){var t=$("<source>").attr("type",e.type).attr("src",e.src);n.append(t)});$(".video-label").html(n.get(0).outerHTML)}function updateCategoryLabel(e){var t=$(".category-label");t.text(e||"All")}function updateView(e){updateCategoryLabel(e);currentList=updateVideosList(e);chooseRandomVideoFromList()}var videos=[{category:["landscape","abstract","technology"],sources:[{type:"video/webm",src:"http://zippy.gfycat.com/MinorGregariousGrub.webm"},{type:"video/mp4",src:"http://zippy.gfycat.com/MinorGregariousGrub.mp4"}]},{category:"abstract",sources:[{type:"video/webm",src:"http://zippy.gfycat.com/SpottedDefensiveAbalone.webm"},{type:"video/mp4",src:"http://zippy.gfycat.com/SpottedDefensiveAbalone.mp4"}]},{category:"technology",sources:[{type:"video/webm",src:"http://zippy.gfycat.com/ViciousUglyArabianoryx.webm"},{type:"video/mp4",src:"http://zippy.gfycat.com/ViciousUglyArabianoryx.mp4"}]}];var currentList;$(function(){updateView();$("select").on("change",function(){updateView(this.value)});$("a.play-video").on("click",function(){chooseRandomVideoFromList()})});(function(e,t,n,r){function 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t=this;this.scrollingStatus=false;heap=e("#heapbox_"+this.instance.heapId+" 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38:t._keyArrowHandler(e("#heapbox_"+t.instance.heapId),"up");n.preventDefault();break;case 40:t._keyArrowHandler(e("#heapbox_"+t.instance.heapId),"down");n.preventDefault();break}})},_setMouseWheelEvents:function(){var t=this,n=e("div#heapbox_"+this.instance.heapId+" .handler"),r=n.find("div.heap");n.on("mousewheel",function(e,t){e.preventDefault();if(t==-1){r.find(".sliderDown").mousedown().mouseup()}else{r.find(".sliderUp").mousedown().mouseup()}})},_keyArrowHandler:function(t,n){var r=this;var i=false;t.find("div.heap ul li").each(function(){if(e(this).find("a").hasClass("selected")){i=true;selectItem=n=="down"?r._findNext(e(this)):r._findPrev(e(this));if(selectItem){r._heapChanged(r,selectItem,true);return false}}});if(i==false){selectItem=e("div#heapbox_"+r.instance.heapId+" .heapOptions .heapOption").first().find("a").addClass("selected");r._heapChanged(r,selectItem,true)}r._setViewPosition(e("#heapbox_"+r.instance.heapId))},_setMouseWheelEvents:function(){var 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a.selected").last();if(selectedEl.length!=0){if(this.options.title){holderEl.text(this.options.title)}else{holderEl.text(selectedEl.text())}holderEl.attr("rel",selectedEl.attr("rel"));if(selectedEl.attr("data-icon-src")){iconEl=this._createIconElement(selectedEl.attr("data-icon-src"));holderEl.append(iconEl)}}else{holderEl.text(this.options.emptyMessage);this._removeHeapboxHolderEvents();this._removeHeapboxHandlerEvents()}},_setTabindex:function(){var t;t=this.options.tabindex!="undefined"?this.options.tabindex:e(this.element).attr("tabindex");if(t!="undefined"){e("#heapbox_"+this.instance.heapId).attr("tabindex",t)}},_setData:function(t){var n=this;var r=jQuery.parseJSON(t);var 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t=this;e("div[id^=heapbox_]").each(function(n){el=e("div#"+e(this).attr("id"));if(el.data("sourceElement")){sourceEl=e.data(this,"sourceElement");heapBoxInst=e.data(sourceEl,"plugin_"+i);if(t.instance.heapId!=heapBoxInst.instance.heapId){if(heapBoxInst.instance.state){t._callbackManager("change","_closeOthers",true);heapBoxInst._closeheap(true,function(){},function(){t._callbackManager("change","_closeOthers",false)})}}}});t._callbackManager("test","_closeOthers")},_callbackManager:function(e,t,n){if(!this.callbackManager[t])this.callbackManager[t]=0;if(e=="change"){n?this.callbackManager[t]++:this.callbackManager[t]--;this._callbackManager("test",t)}else if(e=="test"){if(this.callbackManager[t]==0)this._handlerClicked(true)}},set:function(e){this._setData(e);this._setHolderTitle();this._setEvents()},select:function(t){heapBoxEl=e("div#heapbox_"+this.instance.heapId);this._heapChanged(this,heapBoxEl.find('.heapOptions 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.heapContainer{width:100%}.heapBox{clear:both;display:inline-block;line-height:35px;position:absolute;font-family:Arial,sans-serif;font-size:12px;font-weight:400;left:1%;top:2%;opacity:.5;z-index:1000;max-width:100%}.heapBox:hover{opacity:1}.heapBox *{margin:0;padding:0;outline:0}.heapBox.disabled .holder{color:#E64937}.heapBox a{text-decoration:none;color:#fff}.heapBox .holder{width:150px;overflow:hidden;background:#FF69B4;text-indent:20px;height:35px}.heapBox .handler{width:25px;background:url(gfx/heapbox_handler_bg.jpg) #FF69B4;height:35px}.heapBox .handler,.heapBox .holder{float:left;position:relative;text-align:left;z-index:10}.heapBox div.heap{display:none;position:absolute;list-style-type:none;left:0;width:175px;top:37px;overflow:hidden}.heapBox .heap .heapOptions{display:block;overflow:hidden;z-index:20;position:relative}.heapBox .heap a.sliderUp{display:block;width:100%;height:15px;background:url(gfx/slider_arrow_up.png) left left no-repeat #FF69B4;border-bottom:1px solid #CD6090;position:absolute;top:0;z-index:30}.heapBox .heap a.sliderDown{display:block;width:100%;height:15px;background:url(gfx/slider_arrow_down.png) left left no-repeat #FF69B4;border-top:1px solid #CD6090;position:absolute;bottom:0;z-index:30}.heapBox .heap .heapOptions .heapOption{z-index:20;position:relative;display:block;height:35px}.heapBox .heap .heapOptions .heapOption a{width:100%;display:block;background:#FF69B4;text-indent:20px;text-align:left}.heapBox .heap .heapOptions .heapOption a.selected,.heapBox .heap .heapOptions .heapOption a:hover{background:#CD6090;text-align:left}.heapBox .heap .heapOptions .heapOption a.disabled{color:#DA695D;text-align:left}

  <script src="//code.jquery.com/jquery-2.1.1.min.js"></script>

  <script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>

  <script type="text/javascript">
    $(document).ready(function() {
      $(".desktop").heapbox();
    });
  </script>


  <select class="desktop" name="select">
    <option value="" selected>All</option>
    <option value="landscape">Landscape</option>
    <option value="technology">Technology</option>
    <option value="abstract">Abstract</option>
  </select>

  <hr>

  <h4>"<span class="category-label"></span>" videos</h4>

  <div id="videos">
    <ul></ul>
  </div>

  <hr>

  <a href="#" class="play-video">
    <div class="video-label">
      <video loop autoplay controls>
        Your browser does not support the <code>video</code> element.
      </video>
    </div>
  </a>

Answer 1

根据Heapbox documentation ，在“事件和回调”部分，您应该在首次声明 heapbox 时创建事件处理程序。因此，在您的 HTML 文件中，将您的 .heapbox() 调用调整为如下所示

$(document).ready(function() {
    $(".desktop").heapbox({
        'onChange':function() {
            updateView(this.value);
        }
    });
  });