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ondragover Event


Call a function when an element is being dragged over a drop target:

<div ondragover="myFunction(event)"></div>
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More examples below.


The ondragover event occurs when a draggable selection is dragged over a target.

By default, data/elements cannot be dropped in other elements. To allow a drop, we must prevent the default handling of the element. This is done by calling the event.preventDefault() method for the ondragover event.

Drag and drop is a common feature in HTML. It is when you "grab" an object and drag it to a different location.

To make an element draggable, use The draggable Attribute.

For more information, see the HTML Drag and Drop Tutorial.

Links and images are draggable by default, and do not need the draggable attribute.

Many events occur in the different stages of a drag and drop operation (see below):

Drag Events

On the Draggable Element:

EventOccurs When
ondrag An element is being dragged
ondragstart The user starts to drag an element
ondragend The user has finished dragging an element

Note: While dragging an element, the ondrag event fires every 350 milliseconds.

On the Drop Target:

EventOccurs When
ondragenter A dragged element enters the drop target
ondragleave A dragged element leaves the drop target
ondragover A dragged element is over the drop target
ondrop A dragged element is dropped on the target

See Also:

The Drag Event Object
The draggable Attribute


HTML Drag and Drop



<element ondragover="myScript">
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In JavaScript:

object.ondragover = function(){myScript};
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In JavaScript, using the addEventListener() method:

object.addEventListener("dragover", myScript);
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Technical Details

Bubbles: Yes
Cancelable: Yes
Event type: DragEvent
HTML tags: All HTML elements
DOM Version: Level 3 Events

More Examples


A demonstration of ALL possible drag and drop events:

<p draggable="true" id="dragtarget">Drag me!</p>

<div class="droptarget">Drop here!</div>

// Events fired on the drag target

document.addEventListener("dragstart", function(event) {
  // The dataTransfer.setData() method sets the data type and the value of the dragged data
  event.dataTransfer.setData("Text", event.target.id);

  // Output some text when starting to drag the p element
  document.getElementById("demo").innerHTML = "Started to drag the p element.";

  // Change the opacity of the draggable element
  event.target.style.opacity = "0.4";

// While dragging the p element, change the color of the output text
document.addEventListener("drag", function(event) {
  document.getElementById("demo").style.color = "red";

// Output some text when finished dragging the p element and reset the opacity
document.addEventListener("dragend", function(event) {
  document.getElementById("demo").innerHTML = "Finished dragging the p element.";
  event.target.style.opacity = "1";

// Events fired on the drop target

// When the draggable p element enters the droptarget, change the DIVS's border style
document.addEventListener("dragenter", function(event) {
  if ( event.target.className == "droptarget" ) {
    event.target.style.border = "3px dotted red";

// By default, data/elements cannot be dropped in other elements. To allow a drop, we must prevent the default handling of the element
document.addEventListener("dragover", function(event) {

// When the draggable p element leaves the droptarget, reset the DIVS's border style
document.addEventListener("dragleave", function(event) {
  if ( event.target.className == "droptarget" ) {
    event.target.style.border = "";

/* On drop - Prevent the browser default handling of the data (default is open as link on drop)
Reset the color of the output text and DIV's border color
Get the dragged data with the dataTransfer.getData() method
The dragged data is the id of the dragged element ("drag1")
Append the dragged element into the drop element
document.addEventListener("drop", function(event) {
  if ( event.target.className == "droptarget" ) {
    document.getElementById("demo").style.color = "";
    event.target.style.border = "";
    var data = event.dataTransfer.getData("Text");
Try it Yourself »

Browser Support

ondragover is a DOM Level 3 (2004) feature.

It is fully supported in all modern browsers:

Chrome Edge Firefox Safari Opera IE
Yes Yes Yes Yes Yes 11