JQuery UI可排序占位符样式问题

Question

我一直在试图找出一个朋友。他们有一个HTML5本地音乐播放器，允许用户拖放播放列表中的项目。然而，占位符的颜色没有显示出来，其他元素如高度和线条高度。这里是JSFiddle，所以你可以看到我在说什么：http://jsfiddle.net/aYYUU/在此先感谢您的帮助。

Answer 1

请尝试以下操作。这是因为占位符是一个空行。只需追加td即可。

JSFiddle

HTML

<table id="songList"> 
<thead> 
    <tr> 
     <th id="check"><input type="checkbox" title="Select All"></th> 
     <th id="delete"><button title="Delete Selected"></button></th> 
     <th id="play"><button></button></th> 
     <th id="artist" style="width: 296px; ">Artist</th> 
     <th id="title" style="width: 296px; ">Title</th> 
     <th id="album" style="width: 297px; ">Album</th> 
    </tr> 
</thead> 
<tbody style="height: 204px; " class="ui-sortable"><tr class="ui-state-default playing"><td class="check"><input type="checkbox"></td><td class="delete"><button title="Delete From List"></button></td><td class="play"><button></button></td><td class="artist" style="width: 296px; ">Masakazu Sugimori</td><td class="title" style="width: 296px; ">Ace Attorney ~ Prologue</td><td class="album" style="width: 280px; ">Phoenix Wright - Ace Attorney OST</td></tr><tr class="ui-state-default"><td class="check"><input type="checkbox"></td><td class="delete"><button title="Delete From List"></button></td><td class="play"><button></button></td><td class="artist" style="width: 296px; ">Masakazu Sugimori</td><td class="title" style="width: 296px; ">Reminiscence ~ Case DL-6</td><td class="album" style="width: 280px; ">Phoenix Wright - Ace Attorney OST</td></tr><tr class="ui-state-default"><td class="check"><input type="checkbox"></td><td class="delete"><button title="Delete From List"></button></td><td class="play"><button></button></td><td class="artist" style="width: 296px; ">Masakazu Sugimori</td><td class="title" style="width: 296px; ">Rise From The Ashes ~ End</td><td class="album" style="width: 280px; ">Phoenix Wright - Ace Attorney OST</td></tr></tbody> 
</table> 

CSS

table input[type=checkbox], table button { 
    border: none; 
    margin: 0; 
    padding: 0; 
    width: 13px; 
    height: 13px; 
    position: relative; 
    top: 1px; 
} 

table { 
    border-spacing: 0; 
    width: 100%; 
} 

JS

$('#songList tbody').sortable({ 
    refreshPositions: true, 
    opacity: 0.6, 
    scroll: true, 
    containment: 'parent', 
    placeholder: 'ui-placeholder', 
    tolerance: 'pointer', 
    'start': function (event, ui) { 
     ui.placeholder.html("<td colspan='6'></td>") 
    } 
}).disableSelection();