<div ondragenter="dragEnter(event)"> - Javascript DOM Event

Javascript examples for DOM Event:ondragenter

  1. HOME
  2. Javascript
  3. DOM Event
  4. ondragenter

Description

The ondragenter event occurs when a draggable element enters a valid drop target.

Summary

Bubbles Yes
Cancelable Yes
Supported HTML tags: All HTML elements

Demo Code

ResultView the demo in separate window 

<!DOCTYPE HTML>
<html>
<head>
<style>
.droptarget {//from  ww w .j  a v  a  2s  .c  o m
    float: left;
    width: 100px;
    height: 35px;
    margin: 15px;
    margin-right: 100px;
    padding: 10px;
    border: 1px solid red;
}
</style>
</head>
<body>

<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)">drop here</div>

<p id="demo"></p>

<script>
function dragStart(event) {
    event.dataTransfer.setData("Text", event.target.id);
}

function dragEnter(event) {
    if ( event.target.className == "droptarget" ) {
        document.getElementById("demo").innerHTML = "Entered the dropzone";
        event.target.style.backgroundColor = "lightblue";
    }
}

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

function allowDrop(event) {
    event.preventDefault();
}

function drop(event) {
    event.preventDefault();
    event.target.style.backgroundColor = "";
    var data = event.dataTransfer.getData("Text");
    event.target.appendChild(document.getElementById(data));
}
</script>

</body>
</html>

Related Tutorials