jQuery UI 实例 _ 放置(Droppable)

为可拖拽小部件创建目标。

如需了解更多有关 droppable 交互的细节,请查看 API 文档 可放置小部件(Droppable Widget)

默认功能

在任意的 DOM 元素上启用 droppable 功能,并为可拖拽小部件创建目标。

<!doctype html>
<html lang="en">
<head>
 <meta charset="utf-8">
 <title>jQuery UI 放置(Droppable) - 默认功能</title>
 <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
 <script src="//code.jquery.com/jquery-1.9.1.js"></script>
 <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
 <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
 <style>
 #draggable { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
 #droppable { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
 </style>
 <script>
 $(function() {
 $( "#draggable" ).draggable();
 $( "#droppable" ).droppable({
 drop: function( event, ui ) {
 $( this )
 .addClass( "ui-state-highlight" )
 .find( "p" )
 .html( "Dropped!" );
 }
 });
 });
 </script>
</head>
<body>
 
<div id="draggable" class="ui-widget-content">
 <p>请把我拖拽到目标处!</p>
</div>
 
<div id="droppable" class="ui-widget-header">
 <p>请放置在这里!</p>
</div>
 
 
</body>
</html>

接受

使用 accept 选项指定目标 droppable 接受哪一个元素(或元素组)。

<!doctype html>
<html lang="en">
<head>
 <meta charset="utf-8">
 <title>jQuery UI 放置(Droppable) - 接受</title>
 <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
 <script src="//code.jquery.com/jquery-1.9.1.js"></script>
 <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
 <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
 <style>
 #droppable { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
 #draggable, #draggable-nonvalid { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
 </style>
 <script>
 $(function() {
 $( "#draggable, #draggable-nonvalid" ).draggable();
 $( "#droppable" ).droppable({
 accept: "#draggable",
 activeClass: "ui-state-hover",
 hoverClass: "ui-state-active",
 drop: function( event, ui ) {
 $( this )
 .addClass( "ui-state-highlight" )
 .find( "p" )
 .html( "Dropped!" );
 }
 });
 });
 </script>
</head>
<body>
 
<div id="draggable-nonvalid" class="ui-widget-content">
 <p>我是不能被放置的 draggable</p>
</div>
 
<div id="draggable" class="ui-widget-content">
 <p>请拖拽我到目标</p>
</div>
 
<div id="droppable" class="ui-widget-header">
 <p>accept: '#draggable'</p>
</div>
 
 
</body>
</html>

防止传播

当使用嵌套的 droppable 时 — 例如,您可以有一个树形的可编辑的目录结构,带有文件夹和文档节点 — greedy 选项设置为 true 来防止当 draggable 被放置在子节点(droppable)上时的事件传播。

<!doctype html>
<html lang="en">
<head>
 <meta charset="utf-8">
 <title>jQuery UI 放置(Droppable) - 防止传播</title>
 <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
 <script src="//code.jquery.com/jquery-1.9.1.js"></script>
 <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
 <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
 <style>
 #draggable { width: 100px; height: 40px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
 #droppable, #droppable2 { width: 230px; height: 120px; padding: 0.5em; float: left; margin: 10px; }
 #droppable-inner, #droppable2-inner { width: 170px; height: 60px; padding: 0.5em; float: left; margin: 10px; }
 </style>
 <script>
 $(function() {
 $( "#draggable" ).draggable();
 
 $( "#droppable, #droppable-inner" ).droppable({
 activeClass: "ui-state-hover",
 hoverClass: "ui-state-active",
 drop: function( event, ui ) {
 $( this )
 .addClass( "ui-state-highlight" )
 .find( "> p" )
 .html( "Dropped!" );
 return false;
 }
 });
 
 $( "#droppable2, #droppable2-inner" ).droppable({
 greedy: true,
 activeClass: "ui-state-hover",
 hoverClass: "ui-state-active",
 drop: function( event, ui ) {
 $( this )
 .addClass( "ui-state-highlight" )
 .find( "> p" )
 .html( "Dropped!" );
 }
 });
 });
 </script>
</head>
<body>
 
<div id="draggable" class="ui-widget-content">
 <p>请拖拽我到目标</p>
</div>
 
<div id="droppable" class="ui-widget-header">
 <p>外部 droppable</p>
 <div id="droppable-inner" class="ui-widget-header">
 <p>内部 droppable(不带有 greedy)</p>
 </div>
</div>
 
<div id="droppable2" class="ui-widget-header">
 <p>外部 droppable</p>
 <div id="droppable2-inner" class="ui-widget-header">
 <p>内部 droppable(带有 greedy)</p>
 </div>
</div>
 
 
</body>
</html>

还原 draggable 的位置

当带有布尔值 revert 选项的 draggable 停止拖拽时,返回 draggable(或它的助手)到原始位置。

<!doctype html>
<html lang="en">
<head>
 <meta charset="utf-8">
 <title>jQuery UI 放置(Droppable) - 还原 draggable 的位置</title>
 <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
 <script src="//code.jquery.com/jquery-1.9.1.js"></script>
 <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
 <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
 <style>
 #draggable, #draggable2 { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
 #droppable { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
 </style>
 <script>
 $(function() {
 $( "#draggable" ).draggable({ revert: "valid" });
 $( "#draggable2" ).draggable({ revert: "invalid" });
 
 $( "#droppable" ).droppable({
 activeClass: "ui-state-default",
 hoverClass: "ui-state-hover",
 drop: function( event, ui ) {
 $( this )
 .addClass( "ui-state-highlight" )
 .find( "p" )
 .html( "已放置!" );
 }
 });
 });
 </script>
</head>
<body>
 
<div id="draggable" class="ui-widget-content">
 <p>当被放置在目标上时还原</p>
</div>
 
<div id="draggable2" class="ui-widget-content">
 <p>当未被放置在目标上时还原</p>
</div>
 
<div id="droppable" class="ui-widget-header">
 <p>请放置在这里</p>
</div>
 
 
</body>
</html>

购物车演示

演示如何使用折叠面板来展示产品的目录结构,使用拖拽和放置来添加产品到购物车,购物车中的产品是可排序的。

<!doctype html>
<html lang="en">
<head>
 <meta charset="utf-8">
 <title>jQuery UI 放置(Droppable) - 购物车演示</title>
 <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
 <script src="//code.jquery.com/jquery-1.9.1.js"></script>
 <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
 <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
 <style>
 h1 { padding: .2em; margin: 0; }
 #products { float:left; width: 500px; margin-right: 2em; }
 #cart { width: 200px; float: left; margin-top: 1em; }
 /* 定义列表样式,以便最大化 droppable */
 #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();
 $( "<li></li>" ).text( ui.draggable.text() ).appendTo( this );
 }
 }).sortable({
 items: "li:not(.placeholder)",
 sort: function() {
 // 获取由 droppable 与 sortable 交互而加入的条目
 // 使用 connectWithSortable 可以解决这个问题,但不允许您自定义 active/hoverClass 选项
 $( this ).removeClass( "ui-state-default" );
 }
 });
 });
 </script>
</head>
<body>
 
<div id="products">
 <h1 class="ui-widget-header">产品</h1>
 <div id="catalog">
 <h2><a href="#">T-Shirts</a></h2>
 <div>
 <ul>
 <li>Lolcat Shirt</li>
 <li>Cheezeburger Shirt</li>
 <li>Buckit Shirt</li>
 </ul>
 </div>
 <h2><a href="#">Bags</a></h2>
 <div>
 <ul>
 <li>Zebra Striped</li>
 <li>Black Leather</li>
 <li>Alligator Leather</li>
 </ul>
 </div>
 <h2><a href="#">Gadgets</a></h2>
 <div>
 <ul>
 <li>iPhone</li>
 <li>iPod</li>
 <li>iPad</li>
 </ul>
 </div>
 </div>
</div>
 
<div id="cart">
 <h1 class="ui-widget-header">购物车</h1>
 <div class="ui-widget-content">
 <ol>
 <li class="placeholder">添加产品到这里</li>
 </ol>
 </div>
</div>
 
 
</body>
</html>

简单的照片管理器

您可以通过拖拽照片到回收站或者点击回收站图标来删除照片。

您可以通过拖拽照片到相册或者点击回收利用图标来还原照片。

您可以通过点击缩放图标来查看大图。jQuery UI 对话框(dialog)部件用于模态窗口。

<!doctype html>
<html lang="en">
<head>
 <meta charset="utf-8">
 <title>jQuery UI 放置(Droppable) - 简单的照片管理器</title>
 <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
 <script src="//code.jquery.com/jquery-1.9.1.js"></script>
 <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
 <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
 <style>
 #gallery { float: left; width: 65%; min-height: 12em; }
 .gallery.custom-state-active { background: #eee; }
 .gallery li { float: left; width: 96px; padding: 0.4em; margin: 0 0.4em 0.4em 0; text-align: center; }
 .gallery li h5 { margin: 0 0 0.4em; cursor: move; }
 .gallery li a { float: right; }
 .gallery li a.ui-icon-zoomin { float: left; }
 .gallery li img { width: 100%; cursor: move; }
 
 #trash { float: right; width: 32%; min-height: 18em; padding: 1%; }
 #trash h4 { line-height: 16px; margin: 0 0 0.4em; }
 #trash h4 .ui-icon { float: left; }
 #trash .gallery h5 { display: none; }
 </style>
 <script>
 $(function() {
 // 这是相册和回收站
 var $gallery = $( "#gallery" ),
 $trash = $( "#trash" );
 
 // 让相册的条目可拖拽
 $( "li", $gallery ).draggable({
 cancel: "a.ui-icon", // 点击一个图标不会启动拖拽
 revert: "invalid", // 当未被放置时,条目会还原回它的初始位置
 containment: "document",
 helper: "clone",
 cursor: "move"
 });
 
 // 让回收站可放置,接受相册的条目
 $trash.droppable({
 accept: "#gallery > li",
 activeClass: "ui-state-highlight",
 drop: function( event, ui ) {
 deleteImage( ui.draggable );
 }
 });
 
 // 让相册可放置,接受回收站的条目
 $gallery.droppable({
 accept: "#trash li",
 activeClass: "custom-state-active",
 drop: function( event, ui ) {
 recycleImage( ui.draggable );
 }
 });
 
 // 图像删除功能
 var recycle_icon = "<a href='link/to/recycle/script/when/we/have/js/off' title='还原图像' class='ui-icon ui-icon-refresh'>还原图像</a>";
 function deleteImage( $item ) {
 $item.fadeOut(function() {
 var $list = $( "ul", $trash ).length ?
 $( "ul", $trash ) :
 $( "<ul class='gallery ui-helper-reset'/>" ).appendTo( $trash );
 
 $item.find( "a.ui-icon-trash" ).remove();
 $item.append( recycle_icon ).appendTo( $list ).fadeIn(function() {
 $item
 .animate({ width: "48px" })
 .find( "img" )
 .animate({ height: "36px" });
 });
 });
 }
 
 // 图像还原功能
 var trash_icon = "<a href='link/to/trash/script/when/we/have/js/off' title='删除图像' class='ui-icon ui-icon-trash'>删除图像</a>";
 function recycleImage( $item ) {
 $item.fadeOut(function() {
 $item
 .find( "a.ui-icon-refresh" )
 .remove()
 .end()
 .css( "width", "96px")
 .append( trash_icon )
 .find( "img" )
 .css( "height", "72px" )
 .end()
 .appendTo( $gallery )
 .fadeIn();
 });
 }
 
 // 图像预览功能,演示 ui.dialog 作为模态窗口使用
 function viewLargerImage( $link ) {
 var src = $link.attr( "href" ),
 title = $link.siblings( "img" ).attr( "alt" ),
 $modal = $( "img[src$='" + src + "']" );
 
 if ( $modal.length ) {
 $modal.dialog( "open" );
 } else {
 var img = $( "<img alt='" + title + "' width='384' height='288' style='display: none; padding: 8px;' />" )
 .attr( "src", src ).appendTo( "body" );
 setTimeout(function() {
 img.dialog({
 title: title,
 width: 400,
 modal: true
 });
 }, 1 );
 }
 }
 
 // 通过事件代理解决图标行为
 $( "ul.gallery > li" ).click(function( event ) {
 var $item = $( this ),
 $target = $( event.target );
 
 if ( $target.is( "a.ui-icon-trash" ) ) {
 deleteImage( $item );
 } else if ( $target.is( "a.ui-icon-zoomin" ) ) {
 viewLargerImage( $target );
 } else if ( $target.is( "a.ui-icon-refresh" ) ) {
 recycleImage( $item );
 }
 
 return false;
 });
 });
 </script>
</head>
<body>
 
<div class="ui-widget ui-helper-clearfix">
 
<ul id="gallery" class="gallery ui-helper-reset ui-helper-clearfix">
 <li class="ui-widget-content ui-corner-tr">
 <h5 class="ui-widget-header">High Tatras</h5>
 <img src="/wp-content/uploads/2014/03/high_tatras_min.jpg" alt="High Tatras 的最高峰" width="96" height="72">
 <a href="/wp-content/uploads/2014/03/high_tatras.jpg" title="查看大图" class="ui-icon ui-icon-zoomin">查看大图</a>
 <a href="link/to/trash/script/when/we/have/js/off" title="删除图像" class="ui-icon ui-icon-trash">删除图像</a>
 </li>
 <li class="ui-widget-content ui-corner-tr">
 <h5 class="ui-widget-header">High Tatras 2</h5>
 <img src="/wp-content/uploads/2014/03/high_tatras2_min.jpg" alt="绿山湖畔的小屋" width="96" height="72">
 <a href="/wp-content/uploads/2014/03/high_tatras2.jpg" title="查看大图" class="ui-icon ui-icon-zoomin">查看大图</a>
 <a href="link/to/trash/script/when/we/have/js/off" title="删除图像" class="ui-icon ui-icon-trash">删除图像</a>
 </li>
 <li class="ui-widget-content ui-corner-tr">
 <h5 class="ui-widget-header">High Tatras 3</h5>
 <img src="/wp-content/uploads/2014/03/high_tatras3_min.jpg" alt="计划登高" width="96" height="72">
 <a href="/wp-content/uploads/2014/03/high_tatras3.jpg" title="查看大图" class="ui-icon ui-icon-zoomin">查看大图</a>
 <a href="link/to/trash/script/when/we/have/js/off" title="删除图像" class="ui-icon ui-icon-trash">删除图像</a>
 </li>
 <li class="ui-widget-content ui-corner-tr">
 <h5 class="ui-widget-header">High Tatras 4</h5>
 <img src="/wp-content/uploads/2014/03/high_tatras4_min.jpg" alt="在 Kozi kopka 的顶部" width="96" height="72">
 <a href="/wp-content/uploads/2014/03/high_tatras4.jpg" title="查看大图" class="ui-icon ui-icon-zoomin">查看大图</a>
 <a href="link/to/trash/script/when/we/have/js/off" title="删除图像" class="ui-icon ui-icon-trash">删除图像</a>
 </li>
</ul>
 
<div id="trash" class="ui-widget-content ui-state-default">
 <h4 class="ui-widget-header"><span class="ui-icon ui-icon-trash">回收站</span> 回收站</h4>
</div>
 
</div>
 
 
</body>
</html>

视觉反馈

当悬停在 droppable 上时,或者当 droppable 被激活(即一个可接受的 draggable 被放置在 droppable 上)时,改变 droppable 的外观。使用 hoverClassactiveClass 选项来分别指定 class。

<!doctype html>
<html lang="en">
<head>
 <meta charset="utf-8">
 <title>jQuery UI 放置(Droppable) - 视觉反馈</title>
 <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
 <script src="//code.jquery.com/jquery-1.9.1.js"></script>
 <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
 <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
 <style>
 #draggable, #draggable2 { width: 90px; height: 90px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
 #droppable, #droppable2 { width: 120px; height: 120px; padding: 0.5em; float: left; margin: 10px; }
 h3 { clear: left; }
 </style>
 <script>
 $(function() {
 $( "#draggable" ).draggable();
 $( "#droppable" ).droppable({
 hoverClass: "ui-state-hover",
 drop: function( event, ui ) {
 $( this )
 .addClass( "ui-state-highlight" )
 .find( "p" )
 .html( "Dropped!" );
 }
 });
 
 $( "#draggable2" ).draggable();
 $( "#droppable2" ).droppable({
 accept: "#draggable2",
 activeClass: "ui-state-default",
 drop: function( event, ui ) {
 $( this )
 .addClass( "ui-state-highlight" )
 .find( "p" )
 .html( "Dropped!" );
 }
 });
 });
 </script>
</head>
<body>
 
<h3>当悬停在 droppable 上时的反馈:</h3>
 
<div id="draggable" class="ui-widget-content">
 <p>请拖拽我到目标</p>
</div>
 
<div id="droppable" class="ui-widget-header">
 <p>请放置在这里</p>
</div>
 
<h3>当激活 draggable 时的反馈:</h3>
 
<div id="draggable2" class="ui-widget-content">
 <p>请拖拽我到目标</p>
</div>
 
<div id="droppable2" class="ui-widget-header">
 <p>请放置在这里</p>
</div>
 
 
</body>
</html>

0 个评论

要回复文章请先登录注册