HTML ondragstart Event Attribute - HTML Drag Events Attribute

The ondragstart attribute in HTML specifies a script to be run when a user begins dragging an element or text selection. It is a key component of the HTML5 Drag and Drop API, enabling the creation of interactive and dynamic interfaces where elements can be moved by dragging them.

Example of HTML ondragstart Event Attribute

It will Execute a JavaScript when the user starts to drag a <p> element.

index.html

Example: HTML

 <p draggable="true" ondragstart="myFunction(event)">Drag me!</p>

Output should be:

Definition and Usage of HTML ondragstart Event Attribute

The ondragstart attribute fires when the user starts to drag an element or text selection.

Drag and drop is a very common feature in HTML5. It is when you "grab" an object and drag it to a different location. For more information, see our HTML Tutorial on HTML5 Drag and Drop.

Note: To make an element draggable, use the global HTML5 draggable attribute.

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

There are many event attributes that are used, and can occur, in the different stages of a drag and drop operation:

Events fired on the draggable target (the source element):
- ondragstart - fires when the user starts to drag an element
- ondrag - fires when an element is being dragged
- ondragend - fires when the user has finished dragging the element

Events fired on the drop target:
- ondragenter - fires when the dragged element enters the drop target
- ondragover - fires when the dragged element is over the drop target
- ondragleave - fires when the dragged element leaves the drop target
- ondrop - fires when the dragged element is dropped on the drop target

Browser Support of HTML ondragstart Event Attribute

The numbers in the table specify the first browser version that fully supports the event attribute.

Syntax of HTML ondragstart Event Attribute

<element ondragstart="script">

Attribute Values of HTML ondragstart Event Attribute

Value	Description
script	The script to be run on ondragstart

Technical Details of HTML ondragstart Event Attribute

Supported HTML tags:	ALL HTML elements

How to Execute a JavaScript when the user starts to drag a <p> element

It will Drag the p element back and forth between the two rectangles

index.html

Example: HTML

<!DOCTYPE HTML>
<html>
<head>
<style>
.droptarget {
  float: left; 
  width: 100px; 
  height: 35px;
  margin: 15px;
  padding: 10px;
  border: 1px solid #aaaaaa;
}
</style>
</head>
<body>

<p>Drag the p element back and forth between the two rectangles:</p>

<div class="droptarget" ondrop="drop(event)" ondragover="allowDrop(event)">
  <p ondragstart="dragStart(event)" ondragend="dragEnd(event)" draggable="true" id="dragtarget">Drag me!</p>
</div>

<div class="droptarget" ondrop="drop(event)" ondragover="allowDrop(event)"></div>

<p style="clear:both;" id="demo"></p>

<script>
function dragStart(event) {
  event.dataTransfer.setData("Text", event.target.id);
  document.getElementById("demo").innerHTML = "Started to drag the p element";
}

function dragEnd(event) {
  document.getElementById("demo").innerHTML = "Finished dragging the p element.";
}

function allowDrop(event) {
  event.preventDefault();
}

function drop(event) {
  event.preventDefault();
  let data = event.dataTransfer.getData("Text");
  event.target.appendChild(document.getElementById(data));
}
</script>

</body>
</html>

Output should be:

html event attributes

Type:	Develop
Category:	Web Tutorial
Sub Category:	HTML Drag Events Attribute
Uploaded by:	Admin

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