HTML event attribute ondragover
The ondragover attribute event is triggered when
a draggable element or text selection is being dragged over a droppable target.
To make an element draggable, mark that element
with the global HTML5 draggable attribute.
Links and images are draggable by default.
Events fired on the draggable source element:
- ondragstart - starting dragging
- ondrag - during the dragging
- ondragend - finish dragging
Events fired on the drop target:
- ondragenter - when the dragged element enters the droppable target
- ondragover - when the dragged element is over the droppable target
- ondragleave - when the dragged element leaves the droppable target
- ondrop - when the dragged element is dropped on the droppable target
What's new in HTML5
The ondragover attribute is new in HTML5.
Syntax
<element ondragover="script or Javascript function name">
Supported Tags
ALL HTML elements
Browser compatibility
 |
 |
 |
 |
 |
|
|---|---|---|---|---|---|
ondragover |
Yes | 9.0 | Yes | Yes | Yes |
Example
<!DOCTYPE HTML>
<html>
<head>
<style>
#droptarget {<!-- w w w.j a v a 2 s . c o m-->
float: left;
width: 200px;
height: 35px;
margin: 55px;
margin-top: 155px;
padding: 10px;
border: 1px solid black;
}
</style>
</head>
<body>
<p ondragstart="dragStart(event)" draggable="true" id="dragtarget">Drag me into the rectangle!</p>
<div id="droptarget" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
<script>
function dragStart(event) {
event.dataTransfer.setData("Text", event.target.id);
}
function allowDrop(event) {
event.preventDefault();
console.log("OVER.");
}
function drop(event) {
event.preventDefault();
var data = event.dataTransfer.getData("Text");
event.target.appendChild(document.getElementById(data));
console.log("dropped.");
}
</script>
</body>
</html>