Droppable 拖拽实例
utf-8"> <title>jQuery UI Droppable - Simple photo manager</title> <link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css"> <script src="//code.jquery.com/jquery-1.10.2.js"></script> <script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script> <link rel="stylesheet" href="/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() { // there's the gallery and the trash var $gallery = $( "#gallery" ), $trash = $( "#trash" ); // let the gallery items be draggable $( "li", $gallery ).draggable({ cancel: "a.ui-icon", // clicking an icon won't initiate dragging revert: "invalid", // when not dropped, the item will revert back to its initial position containment: "document", helper: "clone", cursor: "move" }); // let the trash be droppable, accepting the gallery items $trash.droppable({ accept: "#gallery > li", activeClass: "ui-state-highlight", drop: function( event, ui ) { deleteImage( ui.draggable ); } }); // let the gallery be droppable as well, accepting items from the trash $gallery.droppable({ accept: "#trash li", activeClass: "custom-state-active", drop: function( event, ui ) { recycleImage( ui.draggable ); } }); // image deletion function var recycle_icon = "<a href='link/to/recycle/script/when/we/have/js/off' title='Recycle this image' class='ui-icon ui-icon-refresh'>Recycle image</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" }); }); }); } // image recycle function var trash_icon = "<a href='link/to/trash/script/when/we/have/js/off' title='Delete this image' class='ui-icon ui-icon-trash'>Delete image</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(); }); } // image preview function, demonstrating the ui.dialog used as a modal window 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 ); } } // resolve the icons behavior with event delegation $( "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="images/high_tatras_min.jpg" alt="The peaks of High Tatras" width="96" height="72"> <a href="images/high_tatras.jpg" title="View larger image" class="ui-icon ui-icon-zoomin">View larger</a> <a href="link/to/trash/script/when/we/have/js/off" title="Delete this image" class="ui-icon ui-icon-trash">Delete image</a> </li> <li class="ui-widget-content ui-corner-tr"> <h5 class="ui-widget-header">High Tatras 2</h5> <img src="images/high_tatras2_min.jpg" alt="The chalet at the Green mountain lake" width="96" height="72"> <a href="images/high_tatras2.jpg" title="View larger image" class="ui-icon ui-icon-zoomin">View larger</a> <a href="link/to/trash/script/when/we/have/js/off" title="Delete this image" class="ui-icon ui-icon-trash">Delete image</a> </li> <li class="ui-widget-content ui-corner-tr"> <h5 class="ui-widget-header">High Tatras 3</h5> <img src="images/high_tatras3_min.jpg" alt="Planning the ascent" width="96" height="72"> <a href="images/high_tatras3.jpg" title="View larger image" class="ui-icon ui-icon-zoomin">View larger</a> <a href="link/to/trash/script/when/we/have/js/off" title="Delete this image" class="ui-icon ui-icon-trash">Delete image</a> </li> <li class="ui-widget-content ui-corner-tr"> <h5 class="ui-widget-header">High Tatras 4</h5> <img src="images/high_tatras4_min.jpg" alt="On top of Kozi kopka" width="96" height="72"> <a href="images/high_tatras4.jpg" title="View larger image" class="ui-icon ui-icon-zoomin">View larger</a> <a href="link/to/trash/script/when/we/have/js/off" title="Delete this image" class="ui-icon ui-icon-trash">Delete image</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">Trash</span> Trash</h4>
效果图如下：
演示地址：http://jqueryui.com/droppable/#photo-manager。
如果拖拽后不让其消失，复制一份新的到拖拽的地方，需要加入
var target = $item.append(recycle_icon).clone();//clone复制一份新的
target.appendTo($list).end().fadeIn(function () {
target
.animate({ width: "48px" })
.find("img")
.animate({ height: "36px" });
});
