JS 参考手册在线编辑器 | JS 参考手册代码测试

<!DOCTYPE HTML>
<html>
<head>
<style>
#droptarget {
  float: left; 
  width: 200px; 
  height: 35px;
  margin: 55px;
  margin-top: 155px;
  padding: 10px;
  border: 1px solid #aaaaaa;
}
</style>
</head>
<body>

<p>此示例演示如何将“ondragstart”和“ondrag”事件分配给 p 元素，以及如何将“ondragover”和“ondrop”事件分配给 div 元素。</p>

<p ondragstart="dragStart(event)" ondrag="dragging(event)" draggable="true" id="dragtarget">把我拖进长方形！</p>

<p style="clear:both;"><strong>注意：</strong>拖动事件在 Internet Explorer 8 及更早版本或 Safari 5.1 及更早版本中不受支持。</p>

function dragging(event) {
  document.getElementById("demo").innerHTML = "The p element is being dragged.";
}

function allowDrop(event) {
  event.preventDefault();
  document.getElementById("demo").innerHTML = "p 元素位于 droptarget 之上。";
  event.target.style.border = "4px dotted purple";
}

function drop(event) {
  event.preventDefault();
  var data = event.dataTransfer.getData("Text");
  event.target.appendChild(document.getElementById(data));
  document.getElementById("demo").innerHTML = "p 元素被删除。";
}
</script>

</body>
</html>