I am trying to drag and drop an image on a div. The image does not get get dragged onto the div and gives the following error
Uncaught TypeError: Failed to execute 'appendChild' on 'Node': parameter 1 is not of type 'Node'.draganddrop.html:20 dropdraganddrop.html:26 ondrop
Code
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Creativity Dashboard</title>
<!-- Required CSS -->
<link href="css/movingboxes.css" rel="stylesheet">
<link href="css/compare.css" rel="stylesheet">
<!--[if lt IE 9]>
<link href="css/movingboxes-ie.css" rel="stylesheet" media="screen">
<![endif]-->
<!-- Required script -->
<script src="http://code.jquery.com/jquery-1.8.0.min.js"></script>
<script src="js/jquery.movingboxes.js"></script>
<!-- Demo only -->
<link href="demo/demo.css" rel="stylesheet">
<script src="demo/demo.js"></script>
<script>
function allowDrop(ev) {
ev.preventDefault();
}
function drag(ev) {
ev.dataTransfer.setData("text", ev.target.id);
}
function drop(ev) {
ev.preventDefault();
var data = ev.dataTransfer.getData("text");
ev.target.appendChild(document.getElementById(data));
}
</script>
<style>
/* Overall & panel width defined using css in MovingBoxes version 2.2.2+ */
#slider-one {
width: 1003px;
}
#slider-one>li {
width: 150px;
}
</style>
</head>
<body>
<div class="wrapper">
<!-- Slider #1 -->
<ul id="slider-one">
<li><img id="drag1" src="demo/1.jpg" draggable="true"
ondragstart="drag(event)" alt="picture"></li>
<li><img id="drag2" src="demo/2.jpg" draggable="true"
ondragstart="drag(event)" alt="picture"></li>
<li><img id="drag3" src="demo/3.jpg" draggable="true"
ondragstart="drag(event)" alt="picture"></li>
<li><img id="drag5" src="demo/4.jpg" draggable="true"
ondragstart="drag(event)" alt="picture"></li>
<li><img id="drag6" src="demo/5.jpg" draggable="true"
ondragstart="drag(event)" alt="picture"></li>
<li><img id="drag7" src="demo/6.jpg" draggable="true"
ondragstart="drag(event)" alt="picture" id="astronaut"></li>
<li><img id="drag8" src="demo/7.jpg" draggable="true"
ondragstart="drag(event)" alt="picture"></li>
</ul>
<!-- end Slider #1 -->
<div id="dragAnddrop" ondrop="drop(event)"
ondragover="allowDrop(event)" style="width: 12em; height: 12em">
</div>
</div>
<div>
<div class="left">
<img id="drag" draggable="true" ondragstart="drag(event)"
src="images/startingImage.jpg" style="width: 12em;" alt="picture">
</div>
<div class="middle ">
<img id="image3" src="images/startingImage.jpg" class="image-size"
alt="picture" draggable="true" ondragstart="drag(event)"> <img
src="images/harvest.jpg" class="image-size" alt="picture">
</div>
<div class="right">
<img src="images/startingImage.jpg" style="width: 12em;"
alt="picture">
</div>
</div>
</body>
</html>
This question is related to
javascript
html
In my case, there was no string on which i was calling appendChild, the object i was passing on appendChild argument was wrong, it was an array and i had pass an element object, so i used divel.appendChild(childel[0]) instead of divel.appendChild(childel) and it worked. Hope it help someone.
use ondragstart(event) instead of ondrag(event)
It's actually a simple answer.
Your function is returning a string rather than the div node. appendChild can only append a node.
For example, if you try to appendChild the string:
var z = '<p>test satu dua tiga</p>'; // is a string
document.body.appendChild(z);
The above code will never work. What will work is:
var z = document.createElement('p'); // is a node
z.innerHTML = 'test satu dua tiga';
document.body.appendChild(z);
You may also use element.insertAdjacentHTML('beforeend', data);
Please read the "Security considerations" on MDN.
This can happen if you accidentally are not dragging the element that does have an id assigned (for example you are dragging the surrounding element). In that case the ID is empty and the function drag() is assigning an empty value which is then passed to drop() and fails there.
Try assigning the ids to all of your elements, including the tds, divs, or whatever is around your draggable element.
Source: Stackoverflow.com