HTML ondragleave Event Attribute - Drag Events Attribute

The ondragleave event attribute in HTML is a global event attribute that can be applied to any HTML element. It fires when a draggable element or text selection, which is currently being dragged, leaves a valid drop target.

Example of HTML ondragleave Event Attribute

It will Execute a JavaScript when a draggable element is moved out of a drop target.

index.html

Example: HTML

 <div ondragleave="myFunction(event)"></div>

Output should be:

Definition and Usage of HTML ondragleave Event Attribute

The ondragleave attribute fires when a draggable element or text selection leaves a valid drop target.

The ondragenter and ondragleave events can help the user to understand that a draggable element is about to enter or leave a drop target. This can be done by, for example, setting a background color when the draggable element enters the drop target, and removing the color when the element is moved out of the target.

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 ondragleave Event Attribute

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

Syntax of HTML ondragleave Event Attribute

<element ondragleave="script">

Attribute Values of HTML ondragleave Event Attribute

Value	Description
script	The script to be run on ondragleave

Technical Details of HTML ondragleave Event Attribute

Supported HTML tags:	ALL HTML elements

How to Execute a JavaScript when a draggable element is moved out of a drop target

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;
  margin-right: 100px;
  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)" ondragenter="dragEnter(event)" ondragleave="dragLeave(event)" ondragover="allowDrop(event)">
  <p ondragstart="dragStart(event)" draggable="true" id="dragtarget">Drag me!</p>
</div>

<div class="droptarget" ondragenter="dragEnter(event)" ondragleave="dragLeave(event)" 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);
}

function dragEnter(event) {
  if ( event.target.className == "droptarget" ) {
    event.target.style.border = "3px dotted red";
    document.getElementById("demo").innerHTML = "Entered the dropzone";
  }
}

function dragLeave(event) {
  if ( event.target.className == "droptarget" ) {
    event.target.style.border = "";
    document.getElementById("demo").innerHTML = "Left the dropzone";
  }
}

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

List of Drag Events Attribute	Drag Events Attribute
HTML ondrag Event Attribute	Drag Events Attribute
HTML ondragend Event Attribute	Drag Events Attribute
HTML ondragend Event Attribute	Drag Events Attribute
HTML ondragleave Event Attribute	Drag Events Attribute
HTML ondragover Event Attribute	Drag Events Attribute
HTML ondragstart Event Attribute	Drag Events Attribute
HTML ondrop Event Attribute	Drag Events Attribute
HTML onscroll Event Attribute	Drag Events Attribute

Single Articles

Example of HTML ondragleave Event Attribute	Drag Events Attribute
Definition and Usage of HTML ondragleave Event Attribute	Drag Events Attribute
Browser Support of HTML ondragleave Event Attribute	Drag Events Attribute
Syntax of HTML ondragleave Event Attribute	Drag Events Attribute
Attribute Values of HTML ondragleave Event Attribute	Drag Events Attribute
Technical Details of HTML ondragleave Event Attribute	Drag Events Attribute
How to Execute a JavaScript when a draggable element is moved out of a drop target	Drag Events Attribute

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

Reffered: https://www.w3schools.com/tags/ev_ondragleave.asp