Need help , Having problem with Drag n Drop...

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May 21, 2012
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Hello & TIA ,
Need help , Having problem with Drag n Drop ?

My code seems quite simple , but I have been hung up for days :

The first DnD doesnt Drop : 'div id="itemContainer" ' , getting Errors:

Code:
W3schools-Drag-and-Drop-and-Back.html:68 Uncaught TypeError: Failed to execute 'appendChild' on 'Node': parameter 1 is not of type 'Node'.
    at drop (W3schools-Drag-and-Drop-and-Back.html:68:13)
    at HTMLDivElement.ondrop (W3schools-Drag-and-Drop-and-Back.html:51:121)

The 2nd DnD works fine .
Code:
<!DOCTYPE HTML>
<html>
<head>
<style>
#div1, #div2 {
  float: left;
  width: 100px;
  height: 35px;
  margin: 10px;
  padding: 10px;
  border: 1px solid black;
}
    .item {
      display: inline-block;
      border-radius: 50%;
      touch-action: none;
      user-select: none;
      counter-increment: itemCount;
      content: 'count' + itemCount;
      width: 32px;
      height: 32px;
      font-family: Arial, Helvetica, sans-serif;
      text-align:center;
      font-size:28px;
      z-index: 8;
    }
</style>
</head>
<body>
<h2>Drag and Drop</h2>
<br>
<div id="itemContainer"   id="dragItems"    ondrop="drop(event)"  ondragover="allowDrop(event)" class="POS"  style=" width:100%;  border: thick solid pink;">
<br>  <div class="item" class="flatOne"  id="flatOne"     draggable="true"   style="  background-color: yellow;" >b1</div>   
<br>  <div class="item" class="one"            draggable="true" ondragstart="drag(event)"  style="  background-color: #FF0004;" > 1</div>   
<br>  <div class="item" class="sharpOne"    draggable="true" ondragstart="drag(event)"  style="  background-color: yellow;" >♯1</div>   
<br>  <div class="item" class="naturalOne"  draggable="true" ondragstart="drag(event)"  style="  background-color: yellow;" >♮1</div>   
</div>
<div id="div1" ondrop="drop(event)" ondragover="allowDrop(event)">
  <img src="RedCircle.png" draggable="true" ondragstart="drag(event)" id="drag1" width="88" height="31">
</div>
<div id="div2" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
<br><br><br><br>
<br>
<div  ondrop="drop(event)" ondragover="allowDrop(event)"  style=" border: thick solid blue; width:100%; height: 200px;">
</div>
<script>
function allowDrop(ev) {
  ev.preventDefault();
//  console.log("function allowDrop(ev)")
}
function drag(ev) {
  ev.dataTransfer.setData("text", ev.target.id);
  console.log("function function drag(ev)")
}
function drop(ev) {
  ev.preventDefault();
  var data = ev.dataTransfer.getData("text");
  ev.target.appendChild(document.getElementById(data));
  console.log("function drop(ev)")
}
</script>
</body>
</html>
 

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