错误:无法在“节点"上执行"appendChild":参数1不是“节点"类型 [英] Error: Failed to execute 'appendChild' on 'Node': parameter 1 is not of type 'Node'
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问题描述
我正在尝试将图像拖放到div上.图片没有被拖到div上，并显示以下错误
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
代码
<!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>
推荐答案
这实际上是一个简单的答案.
It's actually a simple answer.
您的函数返回的是字符串而不是div节点. appendChild只能附加一个节点.
Your function is returning a string rather than the div node. appendChild can only append a node.
例如，如果您尝试将字符串追加给Child:
For example, if you try to appendChild the string:
var z = '<p>test satu dua tiga</p>'; // is a string
document.body.appendChild(z);
以上代码将永远无法使用.可以起作用的是:
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);
这篇关于错误:无法在“节点"上执行"appendChild":参数1不是“节点"类型的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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