tryit_view.asp@filename=trydhtml_move

来自「W3Schools tutorial..web designing」· ASP@FILENAME=TRYDHTML_MOVE 代码 · 共 61 行

ASP@FILENAME=TRYDHTML_MOVE
61
字号
<html>
<head>

<style>
img
{
position:absolute;
}
</style>

<script type="text/javascript">
document.onmousedown=coordinates;
document.onmouseup=mouseup;

function coordinates(e)
{
if (e == null) { e = window.event;}
var sender = (typeof( window.event ) != "undefined" ) ? e.srcElement : e.target;

if (sender.id=="moveMe")
  {
  mouseover=true;
  pleft=parseInt(movMeId.style.left);
  ptop=parseInt(movMeId.style.top);
  xcoor=e.clientX;
  ycoor=e.clientY;
  document.onmousemove=moveImage;
  return false;
  }
else { return false; }
}

function moveImage(e)
{
if (e == null) { e = window.event;}
movMeId.style.left=pleft+e.clientX-xcoor+"px";
movMeId.style.top=ptop+e.clientY-ycoor+"px";
return false;
}

function mouseup(e)
{
document.onmousemove=null;
}
</script>
</head>
<body>

<img id="moveMe" src="smiley.gif" width="32" height="32" />
<p>Drag and drop the image</p>

<script type="text/javascript">
//The movable image
movMeId=document.getElementById("moveMe");
//image starting location
movMeId.style.top="75px";
movMeId.style.left="75px";
</script>
</body>
</html>

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