【问题标题】:Draggable element no longer draggable after drop using Jquery UI使用 Jquery UI 拖放后可拖动元素不再可拖动
【发布时间】:2016-12-22 07:29:12
【问题描述】:

下面是我的代码。

   <!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>jQuery UI Droppable - Default functionality</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>
  #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 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() {
    $( "#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>Drag me to my target</p>
</div>
 
<div id="droppable" class="ui-widget-header">
  <p>Drop here</p>
</div>
 
 
</body>
</html>

在这里它将拖放到容器中。我想要做的是在拖放后不能再次从放置容器中拖动它。如果有人知道解决方案,请帮助我解决这个问题。

【问题讨论】:

  • 为删除的元素初始化插件

标签: javascript jquery jquery-ui


【解决方案1】:

您好,只要将可拖动事件拖放就禁用它。

$("#draggable").draggable('禁用');

   <!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>jQuery UI Droppable - Default functionality</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>
  #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 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() {
    $( "#draggable" ).draggable();
    $( "#droppable" ).droppable({
      drop: function( event, ui ) {
        $( this )
          .addClass( "ui-state-highlight" )
          .find( "p" )
            .html( "Dropped!" );
         $( "#draggable" ).draggable( 'disable' );
      }
    });
  } );
  </script>
</head>
<body>
 
<div id="draggable" class="ui-widget-content">
  <p>Drag me to my target</p>
</div>
 
<div id="droppable" class="ui-widget-header">
  <p>Drop here</p>
</div>
 
 
</body>
</html>

【讨论】:

  • 我运行了sn-p代码,把白色盒子放到黄色盒子里面后,我不能拖动它。
  • @inyourcorner 如果你想让它在黄色框内可拖动,只需删除 $( "#draggable" ).draggable( 'disable' );这个。
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