dragover | ondragover event (Internet Explorer)

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Fires on the target element continuously while the user drags the object over a valid drop target.

Syntax

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

Event information

Synchronous	No
Bubbles	No
Cancelable	No

Event handler parameters

pEvtObj [in]: Type: IHTMLEventObj

Standards information

There are no standards that apply here.

Remarks

The ondragover event fires on the target object after the ondragenter event has fired.

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

Calls the associated event handler.

To invoke this event, do one of the following:

Drag the selection over a valid drop target within the client.
Drag the selection to a valid drop target within another window.

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>

dragover | ondragover event