13.htm

来自「介绍了javascript的常用的函数」· HTM 代码 · 共 32 行

HTM
32
字号
<html>
<head>
<title>使用鼠标拖动图片</title>
<script language="javascript">
<!--
	down = false;
	var x,y,imgID;
	function dragImage(obj){
		imgID = obj;
		x = event.x - parseInt(imgID.style.left);
		y = event.y - parseInt(imgID.style.top);
		down=true;
	}
	function cancelDrag(){	down=false;	}
	function moveImage(){
		if(down){
			imgID.style.left  = event.x - x;
			imgID.style.top   = event.y - y;
			event.returnValue = false;
		}
	}
	document.onmousemove = moveImage;
	document.onmouseup = cancelDrag;
//-->
</script>
</head>
<body>
<img src="card.jpg" style="position:absolute;left:0px;top=0px"
onMouseDown="dragImage(this)">
</div>
</body>
</html>

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