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drop | ondrop event

Fires on the target object when the mouse button is released during a drag-and-drop operation.

Syntax

HTML Attribute <element ondrop = "handler(event)">
Event Property object.ondrop = handler;
attachEvent Method object.attachEvent("ondrop", handler)
addEventListener Method object.addEventListener("drop", handler, useCapture)

 

Event information

SynchronousNo
BubblesYes
CancelableYes

 

Event handler parameters

pEvtObj [in]

Type: IHTMLEventObj

Standards information

There are no standards that apply here.

Remarks

The ondrop event fires before the ondragleave and ondragend events.

When scripting custom functionality, use the returnValue property to disable the default action.

You must cancel the default action for ondragenter and ondragover in order for ondrop to fire. In the case of a div, the default action is not to drop. This can be contrasted with the case of an input type=text element, where the default action is to drop. In order to allow a drag-and-drop action on a div, you must cancel the default action by specifying window.event.returnValue=false in both the ondragenter and ondragover event handlers. Only then will ondrop fire.

As of Microsoft Internet Explorer 5, drag-and-drop events can be used to carry out drag-and-drop activities, not only with input type=text elements, but also with block and inline tags. For example, text can be selected, dragged, then dropped on a div target. This causes several target events to fire, including ondragenter, ondragover, and ondrop. Because drag-and-drop actions are not directly supported on block and inline tags, you must use extra scripting to carry out the move or copy to the target using innerText, for example.

Calls the associated event handler.

To invoke this event, do one of the following:

  • Drag the selection over a valid drop target and release the mouse.

Examples

This example shows when and where each event fires during a drag-and-drop operation by listing each event and the name of the object firing it in a list box.

Code example: http://samples.msdn.microsoft.com/workshop/samples/author/dhtml/refs/DragDropEventsEX.htm


<head>
<script type="text/javascript">
// Code for dynamically adding options to a select.
function ShowResults()
{				// Information about the events 
				 // and what object fired them.
  arg = event.type + "  fired by  " + event.srcElement.id;  
  var oNewOption = new Option(); 
  oNewOption.text = arg;
  oResults.add(oNewOption,0);
}
</script>
</head>
<body>
<p>Source events are wired up to this text box.</p>
<input id=txtDragOrigin value="Text to Drag"
    ondragstart="ShowResults()"
    ondrag="ShowResults()"
    ondragend="ShowResults()"
>
<p>Target events are bound to this text box.</p>
<input id=txtDragDestination value="Drag Destination"
    ondragenter="ShowResults()"
    ondragover="ShowResults()"
    ondragleave="ShowResults()"
    ondrop="ShowResults()"
>
<select id=oResults size=30>
  <option>List of Events Fired
</select>
</body>

See also

a
abbr
acronym
address
area
audio
b
bdo
big
blockQuote
body
button
canvas
caption
center
cite
code
custom
dd
del
dfn
dir
div
dl
document
dt
em
fieldSet
font
form
hn
hr
i
img
input type=button
input type=checkbox
input type=email
input type=file
input type=image
input type=number
input type=password
input type=radio
input type=range
input type=reset
input type=search
input type=submit
input type=tel
input type=text
input type=url
kbd
label
li
listing
map
marquee
media
menu
noBR
object
ol
p
plainText
pre
q
s
samp
select
small
source
span
strike
strong
sub
sup
table
tBody
td
textArea
tr
tt
u
ul
var
video
window
xmp
About DHTML Data Transfer

 

 

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