The ondragleave event occurs when a draggable element or text selection leaves a valid drop target.
The ondragenter and ondragleave events can help the user to understand dropzone.There are some events that are used and occurred in the different stages of a drag and drop operation:
- ondragstart: occurs when dragging of an element started.
- ondrag: occurs while an element is dragging.
- ondragend: occurs when dragging of an element finished.
- ondragenter: occurs when the dragged element entered into the drop target.
- ondragover: occurs when the dragged element is over the drop target.
- ondragleave: occurs when the dragged element leaves from the drop target.
- ondrop: occurs when the dragged element is dropped on the drop target.
Supported Tags: It supports all HTML elements.
Syntax:
In HTML:
<element ondragleave="myScript">
In JavaScript:
object.ondragleave = function(){myScript};
In JavaScript, using the addEventListener() method:
object.addEventListener("dragleave", myScript);
Example 1: Using HTML
<!DOCTYPE HTML>
<html>
<head>
<title>
HTML DOM ondragleave Event
</title>
<style>
.droptarget {
float: center;
width: 300px;
height: 50px;
margin: 20px;
padding: 5px;
border: 6px solid green;
}
</style>
</head>
<body>
<center>
<h1 style="color:green">
GeeksforGeeks
</h1>
<h2>HTML DOM ondragleave Event</h2>
<div class="droptarget"
ondrop="Eledrop(event)"
ondragenter="EledragEnter(event)"
ondragleave="EledragLeave(event)"
ondragover="EleallowDrop(event)">
<p ondragstart="EledragStart(event)"
draggable="true" id="dragtarget">
Dragable element
</p>
</div>
<div class="droptarget"
ondragenter="EledragEnter(event)"
ondragleave="EledragLeave(event)"
ondrop="Eledrop(event)"
ondragover="EleallowDrop(event)">
</div>
<p id="demo"></p>
<script>
function EledragStart(event) {
event.dataTransfer.setData(
"Text", event.target.id);
}
function EledragEnter(event) {
if (event.target.className == "droptarget") {
document.getElementById(
"demo").innerHTML =
"Entered the dropzone";
event.target.style.border =
"6px dotted red";
}
}
function EledragLeave(event) {
if (event.target.className ==
"droptarget") {
document.getElementById(
"demo").innerHTML =
"Left the dropzone";
event.target.style.border = "";
}
}
function EleallowDrop(event) {
event.preventDefault();
}
function Eledrop(event) {
event.preventDefault();
let data =
event.dataTransfer.getData("Text");
event.target.appendChild(
document.getElementById(data));
}
</script>
</center>
</body>
</html>
Output:
Example 2: Using JavaScript
<!DOCTYPE HTML>
<html>
<head>
<title>
HTML DOM ondragleave Event
</title>
<style>
.droptarget {
float: center;
width: 300px;
height: 50px;
margin: 20px;
padding: 5px;
border: 6px solid green;
}
</style>
</head>
<body>
<center>
<h1 style="color:green">
GeeksforGeeks
</h1>
<h2>HTML DOM ondragleave Event</h2>
<div class="droptarget">
<p draggable="true"
id="dragtarget">
Draggable Element
</p>
</div>
<div class="droptarget"></div>
<p id="demo"></p>
<script>
// Event fired on the drag target
document.ondragstart = function(event) {
event.dataTransfer.setData(
"Text", event.target.id);
};
// Events fired on the drop target
document.ondragenter = function(event) {
if (event.target.className == "droptarget") {
document.getElementById(
"demo").innerHTML =
"Entered the dropzone";
event.target.style.backgroundColor =
"yellow";
}
};
document.ondragover = function(event) {
event.preventDefault();
};
document.ondragleave = function(event) {
if (event.target.className == "droptarget") {
document.getElementById(
"demo").innerHTML =
"Left the dropzone";
event.target.style.backgroundColor = "";
}
};
document.ondrop = function(event) {
event.preventDefault();
if (event.target.className == "droptarget") {
event.target.style.backgroundColor = "";
let data =
event.dataTransfer.getData("Text");
event.target.appendChild(
document.getElementById(data));
}
};
</script>
</center>
</body>
</html>
Output:
Example 3: Using the addEventListener() method:
<!DOCTYPE HTML>
<html>
<head>
<title>
HTML DOM ondragleave Event
</title>
<style>
.droptarget {
float: center;
width: 300px;
height: 50px;
margin: 20px;
padding: 5px;
border: 6px solid green;
}
</style>
</head>
<body>
<center>
<h1 style="color:green">
GeeksforGeeks
</h1>
<h2>HTML DOM ondragleave Event</h2>
<div class="droptarget">
<p draggable="true" id="dragtarget">
Draggable Element
</p>
</div>
<div class="droptarget"></div>
<p id="demo"></p>
<script>
document.addEventListener(
"dragstart", function (event) {
event.dataTransfer.setData(
"Text", event.target.id);
});
document.addEventListener(
"dragenter", function (event) {
if (event.target.className == "droptarget") {
document.getElementById("demo").innerHTML =
"Entered the dropzone";
event.target.style.backgroundColor = "yellow";
}
});
document.addEventListener(
"dragover", function (event) {
event.preventDefault();
});
document.addEventListener("dragleave", function (event) {
if (event.target.className == "droptarget") {
document.getElementById(
"demo").innerHTML = "Left the dropzone";
event.target.style.backgroundColor = "";
}
});
document.addEventListener(
"drop", function (event) {
event.preventDefault();
if (event.target.className == "droptarget") {
event.target.style.backgroundColor = "";
let data =
event.dataTransfer.getData("Text");
event.target.appendChild(
document.getElementById(data));
}
});
</script>
</center>
</body>
</html>
Output:
Supported Browsers: The browsers supported by DOM ondragleave Event are listed below:
- Google Chrome
- Internet Explorer
- Firefox
- Apple Safari
- Opera