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博客园 - Star.Stroll

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JavaScript代码实例:拖动对象 Drag Object (兼容:IE、Firefox、Opera ... )
Star.Stroll · 2008-02-06 · via 博客园 - Star.Stroll

这个是可拖动对象

代码:

<html>
<head>
<style>
.dragAble 
{position:relative;cursor:move;}
</style>
<script language="javascript">
<!--var ie=document.all;
var nn6=document.getElementById&&!document.all;
var isdrag=false;
var y,x;
var oDragObj;function moveMouse(e) {
 
if (isdrag) {
 oDragObj.style.top  
=  (nn6 ? nTY + e.clientY - y : nTY + event.clientY - y)+"px";
 oDragObj.style.left  
=  (nn6 ? nTX + e.clientX - x : nTX + event.clientX - x)+"px";
 
return false;
 }
}
function initDrag(e) {
 
var oDragHandle = nn6 ? e.target : event.srcElement;
 
var topElement = "HTML";
 
while (oDragHandle.tagName != topElement && oDragHandle.className != "dragAble") {
 oDragHandle 
= nn6 ? oDragHandle.parentNode : oDragHandle.parentElement;
 }
//循环获取得到产生事件的对象是否后可拖动对象或其子对象,把可拖动对象赋予oDragHandle
 if (oDragHandle.className=="dragAble") {
 isdrag 
= true;
 oDragObj 
= oDragHandle;
 nTY 
= parseInt(oDragObj.style.top+0);
 y 
= nn6 ? e.clientY : event.clientY;
 nTX 
= parseInt(oDragObj.style.left+0);
 x 
= nn6 ? e.clientX : event.clientX;
 document.onmousemove
=moveMouse;
 
return false;
 }
//判断oDragHandle是否为可拖动对象,如果是让作出相应处理使得该对象可被拖动.
}
document.onmousedown
=initDrag;
document.onmouseup
=new Function("isdrag=false");
//-->
</script>
</head><body>
<div style="border:1px solid #ff6d00;background:#ffd801;width:240px;padding:5px 0;" class="dragAble">这个是可拖动对象</div>
</body>
</html>