JQuery Draggable

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OVERVIEW

The jQuery UI Draggable plugin makes selected elements draggable by mouse.
Draggable elements gets a class of ui-draggable. During drag the element also gets a class ofui-draggable-dragging. If you want not just drag, but drag-and-drop, see the jQuery UI Droppable plugin, which provides a drop target for draggables.
All callbacks (start, stop, drag) receive two arguments: The original browser event and a prepared ui object, view below for a documentation of this object (if you name your second argument 'ui'):
  • ui.helper - the jQuery object representing the helper that's being dragged
  • ui.position - current position of the helper as { top, left } object, relative to the offset element
  • ui.offset - current absolute position of the helper as { top, left } object, relative to page

To manipulate the position of a draggable during drag, you can either use a wrapper as the draggable helper and position the wrapped element with absolute positioning, or you can correct internal values like so: $(this).data('draggable').offset.click.top -= x.

<!DOCTYPE html>
<html>
<head>
  <link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css"/>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script>
  <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
  <style type="text/css">
    #draggable { width: 100px; height: 70px; background: silver; }
  </style>
  <script>
  $(document).ready(function() {
    $("#draggable").draggable();
  });
  </script>
</head>
<body style="font-size:62.5%;">
  
<div id="draggable">Drag me</div>

</body>
</html>

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