<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery UI Sortable - Handle empty lists</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<style>
#sortable1,
#sortable2,
#sortable3 {
list-style-type: none;
margin: 0;
float: left;
margin-right: 10px;
background: #eee;
padding: 5px;
width: 143px;
}
#sortable1 li,
#sortable2 li,
#sortable3 li {
margin: 5px;
padding: 5px;
font-size: 1.2em;
width: 120px;
}
</style>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$(function() {
$("ul.droptrue").sortable({
connectWith: "ul"
});
$("ul.dropfalse").sortable({
connectWith: "ul",
dropOnEmpty: false
});
$("#sortable1, #sortable2, #sortable3").disableSelection();
});
</script>
</head>
<body>
<ul id="sortable1" class="droptrue">
<li class="ui-state-default">Worker 1</li>
<li class="ui-state-default">Worker 2</li>
<li class="ui-state-default">Worker 3</li>
<li class="ui-state-default">Worker 4</li>
<li class="ui-state-default">Worker 5</li>
</ul>
<ul id="sortable2" class="droptrue">
<li class="ui-state-default">Worker 6</li>
<li class="ui-state-default">Worker 7</li>
<li class="ui-state-default">Worker 8</li>
<li class="ui-state-default">Worker 9</li>
<li class="ui-state-default">Worker 10</li>
</ul>
<ul id="sortable3" class="droptrue">
<li class="ui-state-default">Worker 11</li>
<li class="ui-state-default">Worker 12</li>
<li class="ui-state-default">Worker 13</li>
<li class="ui-state-default">Worker 14</li>
<li class="ui-state-default">Worker 15</li>
</ul>
<br style="clear:both">
</body>
</html>正如我在上面提到的，在每一列的末尾，必须显示行数，并且应该显示每行编号。
1 worker1 1 worker8 1 worker14
2 worker2 2 worker10 2 worker13
3 worker3 3 worker11 3 worker15
4 worker4 4 worker12 total 3
5 worker5 total 4
6 worker7
7 worker6
8 worker9
Total 8
最佳答案
要执行您需要的操作，您可以将 ul 元素包装在 div 中，并在其下放置另一个 div 以保存 的总数code>li 该容器中的元素。然后，您可以在使用 sortable 插件的 stop 属性删除元素时更新 total，如下所示:
$("ul.droptrue").sortable({
connectWith: "ul",
stop: function() {
$('.total').text(function() {
return 'Total: ' + $(this).closest('.container').find('li').length;
});
}
});
$("ul.dropfalse").sortable({
connectWith: "ul",
dropOnEmpty: false
});
$("#sortable1, #sortable2, #sortable3").disableSelection();.container {
display: inline-block;
}
#sortable1,
#sortable2,
#sortable3 {
list-style-type: none;
margin: 0;
float: left;
margin-right: 10px;
background: #eee;
padding: 5px;
width: 143px;
}
#sortable1 li,
#sortable2 li,
#sortable3 li {
margin: 5px;
padding: 5px;
font-size: 0.8em; /* changed so the example fits in the snippet better*/
width: 120px;
}<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<div class="container">
<ul id="sortable1" class="droptrue">
<li class="ui-state-default">Worker 1</li>
<li class="ui-state-default">Worker 2</li>
<li class="ui-state-default">Worker 3</li>
<li class="ui-state-default">Worker 4</li>
<li class="ui-state-default">Worker 5</li>
</ul>
<div class="total">Total: 5</div>
</div>
<div class="container">
<ul id="sortable2" class="droptrue">
<li class="ui-state-default">Worker 6</li>
<li class="ui-state-default">Worker 7</li>
<li class="ui-state-default">Worker 8</li>
<li class="ui-state-default">Worker 9</li>
<li class="ui-state-default">Worker 10</li>
</ul>
<div class="total">Total: 5</div>
</div>
<div class="container">
<ul id="sortable3" class="droptrue">
<li class="ui-state-default">Worker 11</li>
<li class="ui-state-default">Worker 12</li>
<li class="ui-state-default">Worker 13</li>
<li class="ui-state-default">Worker 14</li>
<li class="ui-state-default">Worker 15</li>
</ul>
<div class="total">Total: 5</div>
</div>关于javascript - 拖放时显示位置和总数，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/40384177/