放置(Droppable) - 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 hoverClass
或 activeClass
选项来分别指定 class。
源代码
<!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>