jquery - jQuery 可排序占位符水平 div

Question

我正在尝试使 jQuery 上的占位符可排序。我得到了这个代码

$('#list').sortable({
    placeholder: "testclass",
    forcePlaceholderSize: true
});
<div id="list">
    <div class="item">First</div>
    <div class="item">Second</div>
    <div class="item">Third</div>
</div>
.item {
    border: 1px solid black;
    padding: 2px 4px;
    display: inline-block;
}
.testclass {
    background-color: red;
    border: 2px solid red;
}

( http://jsfiddle.net/EUVrK/81/ )

但似乎效果不佳

Answer 1

尝试制作占位符内联块

.testclass {
    background-color: red;
    border: 2px solid red;
    width: inherited;
    display: inline-block;
}

演示：小提琴