Document: drag event

The drag event is fired every few hundred milliseconds as an element or text selection is being dragged by the user.

Bubbles Yes
Cancelable Yes
Default action Continue the drag & drop operation.
Interface DragEvent
Event handler property ondrag

Examples

See this code in a JSFiddle demo or interact with it below.

HTML

<div class="dropzone">
  <div id="draggable" draggable="true" ondragstart="event.dataTransfer.setData('text/plain',null)">
    This div is draggable
  </div>
</div>
<div class="dropzone"></div>
<div class="dropzone"></div>
<div class="dropzone"></div>

CSS

body {
  /* Prevent the user selecting text in the example */
  user-select: none;
}

#draggable {
  width: 200px;
  height: 20px;
  text-align: center;
  background: white;
}

.dropzone {
  width: 200px;
  height: 20px;
  background: blueviolet;
  margin-bottom: 10px;
  padding: 10px;
}

JavaScript

var dragged;

/* events fired on the draggable target */
document.addEventListener("drag", function(event) {

}, false);

document.addEventListener("dragstart", function(event) {
  // store a ref. on the dragged elem
  dragged = event.target;
  // make it half transparent
  event.target.style.opacity = .5;
}, false);

document.addEventListener("dragend", function(event) {
  // reset the transparency
  event.target.style.opacity = "";
}, false);

/* events fired on the drop targets */
document.addEventListener("dragover", function(event) {
  // prevent default to allow drop
  event.preventDefault();
}, false);

document.addEventListener("dragenter", function(event) {
  // highlight potential drop target when the draggable element enters it
  if (event.target.className == "dropzone") {
    event.target.style.background = "purple";
  }

}, false);

document.addEventListener("dragleave", function(event) {
  // reset background of potential drop target when the draggable element leaves it
  if (event.target.className == "dropzone") {
    event.target.style.background = "";
  }

}, false);

document.addEventListener("drop", function(event) {
  // prevent default action (open as link for some elements)
  event.preventDefault();
  // move dragged elem to the selected drop target
  if (event.target.className == "dropzone") {
    event.target.style.background = "";
    dragged.parentNode.removeChild( dragged );
    event.target.appendChild( dragged );
  }
}, false);

Specifications

Specification
HTML Standard
# event-dnd-drag

Browser compatibility

BCD tables only load in the browser

See also