The ondragover event triggers when the dragged element is over the drop target.
Example
You can try to run the following code to learn how to implement ondragover event in JavaScript −
<!DOCTYPE HTML>
<html>
<head>
<style>
.drag {
float: left;
width: 100px;
height: 35px;
border: 2px dashed #876587;
margin: 15px;
padding: 10px;
}
</style>
</head>
<body>
<div class="drag" ondrop="drop(event)" ondragover="dropNow(event)">
<p ondragstart="dragStart(event)" ondragend="dragEnd(event)" draggable="true" id="dragtarget">Drag!</p>
</div>
<div class="drag" ondrop="drop(event)" ondragover="dropNow(event)"></div>
<div id="box"></div>
<p>Drag the left box to the right or drag the right box to the left.</p>
<script>
function dragStart(event) {
event.dataTransfer.setData("Text", event.target.id);
}
function dropNow(event) {
event.preventDefault();
}
function dragEnd(event) {
document.getElementById("box").innerHTML = "Dragging ends!";
}
function drop(event) {
event.preventDefault();
var data = event.dataTransfer.getData("Text");
event.target.appendChild(document.getElementById(data));
document.getElementById("box").innerHTML = "The element dropped successfully!";
}
</script>
</body>
</html>