Javascript DOM ondragover Event via HTML Tag ondragover attribute

Introduction

This example demonstrates how to assign an "ondragstart" and "ondrag" event to a p element and an "ondragover" and "ondrop" event to a div element.

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<!DOCTYPE HTML>
<html>
<head>
<style>
#droptarget {//from   w  ww  .  ja  va2  s. c  o m
  float: left;
  width: 200px;
  height: 35px;
  margin: 55px;
  margin-top: 105px;
  padding: 10px;
  border: 1px solid #aaaaaa;
}
</style>
</head>
<body>
<p ondragstart="dragStart(event)" ondrag="dragging(event)" draggable="true" id="dragtarget">Drag me into the rectangle!</p>

<div id="droptarget" ondragover="allowDrop(event)" ondrop="drop(event)">
</div>
<p id="demo"></p>
<script>
function dragStart(event) {
  event.dataTransfer.setData("Text", event.target.id);
}

function dragging(event) {
  document.getElementById("demo").innerHTML = "The p element is being dragged.";
}

function allowDrop(event) {
  event.preventDefault();
  document.getElementById("demo").innerHTML = "The p element is OVER the droptarget.";
  event.target.style.border = "4px dotted purple";
}

function drop(event) {
  event.preventDefault();
  var data = event.dataTransfer.getData("Text");
  event.target.appendChild(document.getElementById(data));
  document.getElementById("demo").innerHTML = "The p element was dropped.";
}
</script>

</body>
</html>
Bubbles: Yes
Cancelable: Yes
Event type: DragEvent
Supported HTML tags: All HTML elements



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