# jQuery UI Draggable

## 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 of `ui-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

### Dependencies

- UI Core

### Example

- Demo
- View Source

Initialize a draggable with default options.

    $("#draggable").draggable();

    <!DOCTYPE html>
    <html>
    <head>
      <link type="text/css" href="http://jqueryui.com/latest/themes/base/ui.all.css" rel="stylesheet" />
      <script type="text/javascript" src="http://jqueryui.com/latest/jquery-1.3.2.js"></script>
      <script type="text/javascript" src="http://jqueryui.com/latest/ui/ui.core.js"></script>
      <script type="text/javascript" src="http://jqueryui.com/latest/ui/ui.draggable.js"></script>
      <style type="text/css">
        #draggable { width: 100px; height: 70px; background: silver; }
      </style>
      <script type="text/javascript">
      $(document).ready(function(){
        $("#draggable").draggable();
      });
      </script>
    </head>
    <body style="font-size:62.5%;">

    <div id="draggable">Drag me</div>

    </body>
    </html>

## Options

- ### addClasses

  Type:
    Boolean
  Default:
    true

  If set to false, will prevent the `ui-draggable` class from being added. This may be desired as a performance optimization when calling `.draggable()` init on many hundreds of elements.

  #### Code examples

  Initialize a draggable with the `addClasses` option specified.

        $('.selector').draggable({ addClasses: false });

  Get or set the `addClasses` option, after init.

        //getter
        var addClasses = $('.selector').draggable('option', 'addClasses');
        //setter
        $('.selector').draggable('option', 'addClasses', false);

- ### appendTo

  Type:
    Element, Selector
  Default:
    'parent'

  The element passed to or selected by the `appendTo` option will be used as the draggable helper's container during dragging. By default, the helper is appended to the same container as the draggable.

  #### Code examples

  Initialize a draggable with the `appendTo` option specified.

        $('.selector').draggable({ appendTo: 'body' });

  Get or set the `appendTo` option, after init.

        //getter
        var appendTo = $('.selector').draggable('option', 'appendTo');
        //setter
        $('.selector').draggable('option', 'appendTo', 'body');

- ### axis

  Type:
    String
  Default:
    false

  Constrains dragging to either the horizontal (x) or vertical (y) axis. Possible values: 'x', 'y'.

  #### Code examples

  Initialize a draggable with the `axis` option specified.

        $('.selector').draggable({ axis: 'x' });

  Get or set the `axis` option, after init.

        //getter
        var axis = $('.selector').draggable('option', 'axis');
        //setter
        $('.selector').draggable('option', 'axis', 'x');

- ### cancel

  Type:
    Selector
  Default:
    ':input,option'

  Prevents dragging from starting on specified elements.

  #### Code examples

  Initialize a draggable with the `cancel` option specified.

        $('.selector').draggable({ cancel: 'button' });

  Get or set the `cancel` option, after init.

        //getter
        var cancel = $('.selector').draggable('option', 'cancel');
        //setter
        $('.selector').draggable('option', 'cancel', 'button');

- ### connectToSortable

  Type:
    Selector
  Default:
    false

  Allows the draggable to be dropped onto the specified sortables. If this option is used (`helper` must be set to 'clone' in order to work flawlessly), a draggable can be dropped onto a sortable list and then becomes part of it.

  Note: Specifying this option as an array of selectors has been removed.

  #### Code examples

  Initialize a draggable with the `connectToSortable` option specified.

        $('.selector').draggable({ connectToSortable: 'ul#myList' });

  Get or set the `connectToSortable` option, after init.

        //getter
        var connectToSortable = $('.selector').draggable('option', 'connectToSortable');
        //setter
        $('.selector').draggable('option', 'connectToSortable', 'ul#myList');

- ### containment

  Type:
    Selector, Element, String, Array
  Default:
    false

  Constrains dragging to within the bounds of the specified element or region. Possible string values: 'parent', 'document', 'window', [x1, y1, x2, y2].

  #### Code examples

  Initialize a draggable with the `containment` option specified.

        $('.selector').draggable({ containment: 'parent' });

  Get or set the `containment` option, after init.

        //getter
        var containment = $('.selector').draggable('option', 'containment');
        //setter
        $('.selector').draggable('option', 'containment', 'parent');

- ### cursor

  Type:
    String
  Default:
    'auto'

  The css cursor during the drag operation.

  #### Code examples

  Initialize a draggable with the `cursor` option specified.

        $('.selector').draggable({ cursor: 'crosshair' });

  Get or set the `cursor` option, after init.

        //getter
        var cursor = $('.selector').draggable('option', 'cursor');
        //setter
        $('.selector').draggable('option', 'cursor', 'crosshair');

- ### cursorAt

  Type:
    Object
  Default:
    false

  Moves the dragging helper so the cursor always appears to drag from the same position. Coordinates can be given as a hash using a combination of one or two keys: `{ top, left, right, bottom }`.

  #### Code examples

  Initialize a draggable with the `cursorAt` option specified.

        $('.selector').draggable({ cursorAt: { left: 5 } });

  Get or set the `cursorAt` option, after init.

        //getter
        var cursorAt = $('.selector').draggable('option', 'cursorAt');
        //setter
        $('.selector').draggable('option', 'cursorAt', { left: 5 });

- ### delay

  Type:
    Integer
  Default:
    0

  Time in milliseconds after mousedown until dragging should start. This option can be used to prevent unwanted drags when clicking on an element.

  #### Code examples

  Initialize a draggable with the `delay` option specified.

        $('.selector').draggable({ delay: 500 });

  Get or set the `delay` option, after init.

        //getter
        var delay = $('.selector').draggable('option', 'delay');
        //setter
        $('.selector').draggable('option', 'delay', 500);

- ### distance

  Type:
    Integer
  Default:
    1

  Distance in pixels after mousedown the mouse must move before dragging should start. This option can be used to prevent unwanted drags when clicking on an element.

  #### Code examples

  Initialize a draggable with the `distance` option specified.

        $('.selector').draggable({ distance: 30 });

  Get or set the `distance` option, after init.

        //getter
        var distance = $('.selector').draggable('option', 'distance');
        //setter
        $('.selector').draggable('option', 'distance', 30);

- ### grid

  Type:
    Array
  Default:
    false

  Snaps the dragging helper to a grid, every x and y pixels. Array values: [x, y]

  #### Code examples

  Initialize a draggable with the `grid` option specified.

        $('.selector').draggable({ grid: [50, 20] });

  Get or set the `grid` option, after init.

        //getter
        var grid = $('.selector').draggable('option', 'grid');
        //setter
        $('.selector').draggable('option', 'grid', [50, 20]);

- ### handle

  Type:
    Element, Selector
  Default:
    false

  If specified, restricts drag start click to the specified element(s).

  #### Code examples

  Initialize a draggable with the `handle` option specified.

        $('.selector').draggable({ handle: 'h2' });

  Get or set the `handle` option, after init.

        //getter
        var handle = $('.selector').draggable('option', 'handle');
        //setter
        $('.selector').draggable('option', 'handle', 'h2');

- ### helper

  Type:
    String, Function
  Default:
    'original'

  Allows for a helper element to be used for dragging display. Possible values: 'original', 'clone', Function. If a function is specified, it must return a DOMElement.

  #### Code examples

  Initialize a draggable with the `helper` option specified.

        $('.selector').draggable({ helper: 'clone' });

  Get or set the `helper` option, after init.

        //getter
        var helper = $('.selector').draggable('option', 'helper');
        //setter
        $('.selector').draggable('option', 'helper', 'clone');

- ### iframeFix

  Type:
    Boolean, Selector
  Default:
    false

  Prevent iframes from capturing the mousemove events during a drag. Useful in combination with cursorAt, or in any case, if the mouse cursor is not over the helper. If set to true, transparent overlays will be placed over all iframes on the page. If a selector is supplied, the matched iframes will have an overlay placed over them.

  #### Code examples

  Initialize a draggable with the `iframeFix` option specified.

        $('.selector').draggable({ iframeFix: true });

  Get or set the `iframeFix` option, after init.

        //getter
        var iframeFix = $('.selector').draggable('option', 'iframeFix');
        //setter
        $('.selector').draggable('option', 'iframeFix', true);

- ### opacity

  Type:
    Float
  Default:
    false

  Opacity for the helper while being dragged.

  #### Code examples

  Initialize a draggable with the `opacity` option specified.

        $('.selector').draggable({ opacity: 0.35 });

  Get or set the `opacity` option, after init.

        //getter
        var opacity = $('.selector').draggable('option', 'opacity');
        //setter
        $('.selector').draggable('option', 'opacity', 0.35);

- ### refreshPositions

  Type:
    Boolean
  Default:
    false

  If set to true, all droppable positions are calculated on every mousemove. Caution: This solves issues on highly dynamic pages, but dramatically decreases performance.

  #### Code examples

  Initialize a draggable with the `refreshPositions` option specified.

        $('.selector').draggable({ refreshPositions: true });

  Get or set the `refreshPositions` option, after init.

        //getter
        var refreshPositions = $('.selector').draggable('option', 'refreshPositions');
        //setter
        $('.selector').draggable('option', 'refreshPositions', true);

- ### revert

  Type:
    Boolean, String
  Default:
    false

  If set to true, the element will return to its start position when dragging stops. Possible string values: 'valid', 'invalid'. If set to invalid, revert will only occur if the draggable has not been dropped on a droppable. For valid, it's the other way around.

  #### Code examples

  Initialize a draggable with the `revert` option specified.

        $('.selector').draggable({ revert: true });

  Get or set the `revert` option, after init.

        //getter
        var revert = $('.selector').draggable('option', 'revert');
        //setter
        $('.selector').draggable('option', 'revert', true);

- ### revertDuration

  Type:
    Integer
  Default:
    500

  The duration of the revert animation, in milliseconds. Ignored if revert is false.

  #### Code examples

  Initialize a draggable with the `revertDuration` option specified.

        $('.selector').draggable({ revertDuration: 1000 });

  Get or set the `revertDuration` option, after init.

        //getter
        var revertDuration = $('.selector').draggable('option', 'revertDuration');
        //setter
        $('.selector').draggable('option', 'revertDuration', 1000);

- ### scope

  Type:
    String
  Default:
    'default'

  Used to group sets of draggable and droppable items, in addition to droppable's accept option. A draggable with the same scope value as a droppable will be accepted by the droppable.

  #### Code examples

  Initialize a draggable with the `scope` option specified.

        $('.selector').draggable({ scope: 'tasks' });

  Get or set the `scope` option, after init.

        //getter
        var scope = $('.selector').draggable('option', 'scope');
        //setter
        $('.selector').draggable('option', 'scope', 'tasks');

- ### scroll

  Type:
    Boolean
  Default:
    true

  If set to true, container auto-scrolls while dragging.

  #### Code examples

  Initialize a draggable with the `scroll` option specified.

        $('.selector').draggable({ scroll: false });

  Get or set the `scroll` option, after init.

        //getter
        var scroll = $('.selector').draggable('option', 'scroll');
        //setter
        $('.selector').draggable('option', 'scroll', false);

- ### scrollSensitivity

  Type:
    Integer
  Default:
    20

  Distance in pixels from the edge of the viewport after which the viewport should scroll. Distance is relative to pointer, not the draggable.

  #### Code examples

  Initialize a draggable with the `scrollSensitivity` option specified.

        $('.selector').draggable({ scrollSensitivity: 40 });

  Get or set the `scrollSensitivity` option, after init.

        //getter
        var scrollSensitivity = $('.selector').draggable('option', 'scrollSensitivity');
        //setter
        $('.selector').draggable('option', 'scrollSensitivity', 40);

- ### scrollSpeed

  Type:
    Integer
  Default:
    20

  The speed at which the window should scroll once the mouse pointer gets within the `scrollSensitivity` distance.

  #### Code examples

  Initialize a draggable with the `scrollSpeed` option specified.

        $('.selector').draggable({ scrollSpeed: 40 });

  Get or set the `scrollSpeed` option, after init.

        //getter
        var scrollSpeed = $('.selector').draggable('option', 'scrollSpeed');
        //setter
        $('.selector').draggable('option', 'scrollSpeed', 40);

- ### snap

  Type:
    Boolean, Selector
  Default:
    false

  If set to a selector or to true (equivalent to '.ui-draggable'), the draggable will snap to the edges of the selected elements when near an edge of the element.

  #### Code examples

  Initialize a draggable with the `snap` option specified.

        $('.selector').draggable({ snap: true });

  Get or set the `snap` option, after init.

        //getter
        var snap = $('.selector').draggable('option', 'snap');
        //setter
        $('.selector').draggable('option', 'snap', true);

- ### snapMode

  Type:
    String
  Default:
    'both'

  Determines which edges of snap elements the draggable will snap to. Ignored if snap is false. Possible values: 'inner', 'outer', 'both'

  #### Code examples

  Initialize a draggable with the `snapMode` option specified.

        $('.selector').draggable({ snapMode: 'outer' });

  Get or set the `snapMode` option, after init.

        //getter
        var snapMode = $('.selector').draggable('option', 'snapMode');
        //setter
        $('.selector').draggable('option', 'snapMode', 'outer');

- ### snapTolerance

  Type:
    Integer
  Default:
    20

  The distance in pixels from the snap element edges at which snapping should occur. Ignored if snap is false.

  #### Code examples

  Initialize a draggable with the `snapTolerance` option specified.

        $('.selector').draggable({ snapTolerance: 40 });

  Get or set the `snapTolerance` option, after init.

        //getter
        var snapTolerance = $('.selector').draggable('option', 'snapTolerance');
        //setter
        $('.selector').draggable('option', 'snapTolerance', 40);

- ### stack

  Type:
    Object
  Default:
    false

  Controls the z-Index of the defined group (key 'group' in the hash, accepts jQuery selector) automatically, always brings to front the dragged item. Very useful in things like window managers. Optionally, a 'min' key can be set, so the zIndex cannot go below that value.

  #### Code examples

  Initialize a draggable with the `stack` option specified.

        $('.selector').draggable({ stack: { group: 'products', min: 50 } });

  Get or set the `stack` option, after init.

        //getter
        var stack = $('.selector').draggable('option', 'stack');
        //setter
        $('.selector').draggable('option', 'stack', { group: 'products', min: 50 });

- ### zIndex

  Type:
    Integer
  Default:
    false

  z-index for the helper while being dragged.

  #### Code examples

  Initialize a draggable with the `zIndex` option specified.

        $('.selector').draggable({ zIndex: 2700 });

  Get or set the `zIndex` option, after init.

        //getter
        var zIndex = $('.selector').draggable('option', 'zIndex');
        //setter
        $('.selector').draggable('option', 'zIndex', 2700);

## Events

- ### start

  Type:
    dragstart

  This event is triggered when dragging starts.

  #### Code examples

  Supply a callback function to handle the `start` event as an init option.

        $('.selector').draggable({
           start: function(event, ui) { ... }
        });

  Bind to the `start` event by type: `dragstart`.

        $('.selector').bind('dragstart', function(event, ui) {
          ...
        });

- ### drag

  Type:
    drag

  This event is triggered when the mouse is moved during the dragging.

  #### Code examples

  Supply a callback function to handle the `drag` event as an init option.

        $('.selector').draggable({
           drag: function(event, ui) { ... }
        });

  Bind to the `drag` event by type: `drag`.

        $('.selector').bind('drag', function(event, ui) {
          ...
        });

- ### stop

  Type:
    dragstop

  This event is triggered when dragging stops.

  #### Code examples

  Supply a callback function to handle the `stop` event as an init option.

        $('.selector').draggable({
           stop: function(event, ui) { ... }
        });

  Bind to the `stop` event by type: `dragstop`.

        $('.selector').bind('dragstop', function(event, ui) {
          ...
        });

## Methods

- ### destroy

  Signature:
    .draggable( 'destroy' )

  Remove the draggable functionality completely. This will return the element back to its pre-init state.

- ### disable

  Signature:
    .draggable( 'disable' )

  Disable the draggable.

- ### enable

  Signature:
    .draggable( 'enable' )

  Enable the draggable.

- ### option

  Signature:
    .draggable( 'option' , optionName , [value] )

  Get or set any draggable option. If no value is specified, will act as a getter.

## Theming

The jQuery UI Draggable plugin uses the jQuery UI CSS Framework to style its look and feel, including colors and background textures. We recommend using the ThemeRoller tool to create and download custom themes that are easy to build and maintain.

If a deeper level of customization is needed, there are widget-specific classes referenced within the ui.draggable.css stylesheet that can be modified. These classes are highlighed in bold below.

### Sample markup with jQuery UI CSS Framework classes

<div class="ui-draggable"></div>

Note: This is a sample of markup generated by the draggable plugin, not markup you should use to create a draggable. The only markup needed for that is <div></div>.