Javascript DOM ondrag Event via addEventListener() method

Introduction

In JavaScript, using the addEventListener() method: 

object.addEventListener("drag",
       myScript);

This example uses the addEventListener() method to attach "dragstart", "drag", "dragover" and "drop" events to the document object.

Drag the p element back and forth between the two rectangles.

View in separate window 

<!DOCTYPE HTML>
<html>
<head>
<style>
.droptarget {//from www .  j a  va 2 s . c o  m
  float: left;
  width: 100px;
  height: 35px;
  margin: 15px;
  padding: 10px;
  border: 1px solid #aaaaaa;
}
</style>
</head>
<body>
<div class="droptarget">
  <p draggable="true" id="dragtarget">Drag me!</p>
</div>
<div class="droptarget"></div>
<p id="demo"></p>

<script>
/* Events fired on the drag target */
document.addEventListener("dragstart", function(event) {
  event.dataTransfer.setData("Text", event.target.id);
});

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

/* Events fired on the drop target */
document.addEventListener("dragover", function(event) {
  event.preventDefault();
});

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

</body>
</html>



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