files/en-us/web/api/htmlelement/drag_event/index.md
{{APIRef("HTML Drag and Drop API")}}
The drag event is fired every few hundred milliseconds as an element or text selection is being dragged by the user.
This event is cancelable and may bubble up to the {{domxref("Document")}} and {{domxref("Window")}} objects.
Use the event name in methods like {{domxref("EventTarget.addEventListener", "addEventListener()")}}, or set an event handler property.
addEventListener("drag", (event) => { })
ondrag = (event) => { }
A {{domxref("DragEvent")}}. Inherits from {{domxref("Event")}}.
{{InheritanceDiagram("DragEvent")}}
In addition to the properties listed below, properties from the parent interface, {{domxref("Event")}}, are available.
<div class="dropzone">
<div id="draggable" draggable="true">This div is draggable</div>
</div>
<div class="dropzone" id="drop-target"></div>
body {
/* Prevent the user selecting text in the example */
user-select: none;
}
#draggable {
text-align: center;
background: white;
}
.dropzone {
width: 200px;
height: 20px;
background: blueviolet;
margin: 10px;
padding: 10px;
}
.dropzone.dragover {
background-color: purple;
}
.dragging {
opacity: 0.5;
}
let dragged;
/* events fired on the draggable target */
const source = document.getElementById("draggable");
source.addEventListener("drag", (event) => {
console.log("dragging");
});
source.addEventListener("dragstart", (event) => {
// store a ref. on the dragged elem
dragged = event.target;
// make it half transparent
event.target.classList.add("dragging");
});
source.addEventListener("dragend", (event) => {
// reset the transparency
event.target.classList.remove("dragging");
});
/* events fired on the drop targets */
const target = document.getElementById("drop-target");
target.addEventListener("dragover", (event) => {
// prevent default to allow drop
event.preventDefault();
});
target.addEventListener("dragenter", (event) => {
// highlight potential drop target when the draggable element enters it
if (event.target.classList.contains("dropzone")) {
event.target.classList.add("dragover");
}
});
target.addEventListener("dragleave", (event) => {
// reset background of potential drop target when the draggable element leaves it
if (event.target.classList.contains("dropzone")) {
event.target.classList.remove("dragover");
}
});
target.addEventListener("drop", (event) => {
// prevent default action (open as link for some elements)
event.preventDefault();
// move dragged element to the selected drop target
if (event.target.classList.contains("dropzone")) {
event.target.classList.remove("dragover");
event.target.appendChild(dragged);
}
});
{{EmbedLiveSample('Drag and drop example')}}
{{Specifications}}
{{Compat}}