draggable and droppable example
以下是一个拖拽的例子（在参考jquery ui拖拽中的demo中，有很多好的例子）。在drop方法中，ui.draggable用于获取被拖的jquery对象。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI Droppable - Shopping Cart Demo</title>
<link rel="stylesheet" href="http://www.cnblogs.com/themes/base/jquery.ui.all.css">
<script src="http://www.cnblogs.com/jquery-1.7.2.js"></script>
<script src="http://www.cnblogs.com/ui/jquery.ui.core.js"></script>
<script src="http://www.cnblogs.com/ui/jquery.ui.widget.js"></script>
<script src="http://www.cnblogs.com/ui/jquery.ui.mouse.js"></script>
<script src="http://www.cnblogs.com/ui/jquery.ui.draggable.js"></script>
<script src="http://www.cnblogs.com/ui/jquery.ui.droppable.js"></script>
<script src="http://www.cnblogs.com/ui/jquery.ui.sortable.js"></script>
<script src="http://www.cnblogs.com/ui/jquery.ui.accordion.js"></script>
<link rel="stylesheet" href="../demos.css">
<style>
h1 { padding: .2em; margin: 0; }
#products { float:left; width: 500px; margin-right: 2em; }
#cart { width: 200px; float: left; }
/* style the list to maximize the droppable hitarea */
#cart ol { margin: 0; padding: 1em 0 1em 3em; }
</style>
<script>
$(function() {
$( "#catalog" ).accordion();
$( "#catalog li" ).draggable({
appendTo: "body",
helper: "clone"
});
$( "#cart ol" ).droppable({
activeClass: "ui-state-default",
hoverClass: "ui-state-hover",
accept: ":not(.ui-sortable-helper)",
drop: function( event, ui ) {
$( this ).find( ".placeholder" ).remove();
alert("wangle notice: " + ui.draggable.children() );
$( "<li></li>" ).text( ui.draggable.text() ).appendTo( this );
}
}).sortable({
items: "li:not(.placeholder)",
sort: function() {
// gets added unintentionally by droppable interacting with sortable
// using connectWithSortable fixes this, but doesn't allow you to customize active/hoverClass options
$( this ).removeClass( "ui-state-default" );
}
});
});
</script>
</head>
<body>
<div class="demo">
<div id="products">
<h1 class="ui-widget-header">Products</h1>
<div id="catalog">
<h3><a href="#">T-Shirts</a></h3>
<div>
<ul>
<li>Lolcat Shirt</li>
<li>Cheezeburger Shirt</li>
<li>Buckit Shirt</li>
</ul>
</div>
<h3><a href="#">Bags</a></h3>
<div>
<ul>
<li>Zebra Striped</li>
<li>Black Leather</li>
<li>Alligator Leather</li>
</ul>
</div>
<h3><a href="#">Gadgets</a></h3>
<div>
<ul>
<li>iPhone</li>
<li>iPod</li>
<li>iPad</li>
</ul>
</div>
</div>
</div>
<div id="cart">
<h1 class="ui-widget-header">Shopping Cart</h1>
<div class="ui-widget-content">
<ol>
<li class="placeholder">Add your items here</li>
</ol>
</div>
</div>
</div><!-- End demo -->
<div class="demo-description">
<p>Demonstrate how to use an accordion to structure products into a catalog and make use drag and drop for adding them to a shopping cart, where they are sortable.</p>
</div><!-- End demo-description -->
</body>
</html>
