简单拖放
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
#div1 {
width: 300px;
height: 150px;
padding: 10px;
border: 1px solid #aaaaaa;
}
</style>
</head>
<body>
<div id="div1" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
<br />
<img id="drag1" src="img/2.png" style="width: 300px; height: 150px;" draggable="true" ondragstart="drag(event)" />
</body>
</html>
<script type="text/javascript">
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>
来回拖放图片
<!DOCTYPE HTML>
<html>
<head>
<style type="text/css">
#div1, #div2
{float:left; width:198px; height:66px; margin:10px;padding:10px;border:1px solid #aaaaaa;}
</style>
<script type="text/javascript">
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>
</head>
<body>
<div id="div1" ondrop="drop(event)" ondragover="allowDrop(event)">
<img src="/i/eg_dragdrop_w3school.gif" draggable="true" ondragstart="drag(event)" id="drag1" />
</div>
<div id="div2" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
</body>
</html>
原文地址：https://www.cnblogs.com/yyy251/p/8276329.html