html5 拖拽练习题
html5新的拖拽 只支持Internet Explorer 9、Firefox、Opera 12、Chrome 以及 Safari 5 支持拖放。
来一个实例：
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
table td{
width:120px;
height:50px;
border:1px solid #000;
}
table td div.dragDiv{
margin:3px;
border:1px solid #444;
padding:3px;
cursor:pointer;
}
</style>
</head>
<body>
<table>
<tr>
<td>
<div class="dragDiv">我是要拖动的</div>
</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr><tr>
<td>
<div class="dragDiv">我是第二个</div>
</td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
</table>
<p>请把 W3School 的图片拖放到矩形中：</p>
<div id="div1" ondrop="drop(event)" ondragover="allowDrop(event)"></div>
<br />
<img id="drag1" src="images/bigSwim7.png" draggable="true" ondragstart="drag(event)" />
<script src="js/jquery-1.12.0.min.js"></script>
<script type="text/javascript">
//对表格中的DIV拖拽
var tempData = "";
$("table td div.dragDiv").each(function () {
this.draggable = true;
this.ondragstart = function (e) {
if (this == e.target) {
e.dataTransfer.setData("id", e.target.innerHTML);
tempData = this;
}
}
});
$("table td").each(function () {
this.ondragover = function (e) {
e.preventDefault();
}
this.ondrop = function (e) {
if (this == e.target) {
e.preventDefault();
e.target.appendChild(tempData);
tempData = "";
}
}
})
//图片拖拽
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>
</body>
</html>
