JavaScript文章列表的拖拽排序_層和布局特效

JavaScript文章列表的拖拽排序，可隨意拖動任一個LI列表至某一位置，它會自動吸咐，流行的JS技術，感覺很好。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" mrc="text/html; charset=gb2312" />
<title>JavaScript拖拽進行列表排序 -www.ghpqjb.com</title>
	<style type="text/css">
	body{
		margin:0px;
		padding:0px;
		background-repeat:no-repeat;
		padding-top:85px;					
		overflow:hidden;
		padding-left:10px;
		-moz-user-select:no;
	}
	#movableNode{
		position:absolute;
	}
	
	#arrDestInditcator{
		position:absolute;
		display:none;
		width:100px;
	}
	#arrangableNodes,#movableNode ul{
		padding-left:0px;
		margin-left:0px;
		margin-top:0px;
		padding-top:0px;
	}
	
	#arrangableNodes li,#movableNode li{
		list-style-type:none;
		cursor:default;
	}

</style>
	
	<script type="text/javascript">
	var offsetYInsertDiv = -3; // Y offset for the little arrow indicating where the node should be inserted.
	if(!document.all)offsetYInsertDiv = offsetYInsertDiv - 7; 	// No IE

if(e.clientX<leftPosArrangableNodes || e.clientX>leftPosArrangableNodes + widthArrangableNodes)return; 
			
		var subs = arrParent.getElementsByTagName('LI');
		for(var no=0;no<subs.length;no++){
			var topPos =getTopPos(subs[no]);
			var tmpHeight = subs[no].offsetHeight;
			
			if(no==0){
				if(tmpY<=topPos && tmpY>=topPos-5){
					arrInsertDiv.style.top = (topPos + offsetYInsertDiv) + 'px';
					arrInsertDiv.style.display = 'block';				
					arrNodesDestination = subs[no];	
					insertAsFirstNode = true;
					return;
				}				
			}
			
			if(tmpY>=topPos && tmpY<=(topPos+tmpHeight)){
				arrInsertDiv.style.top = (topPos+tmpHeight + offsetYInsertDiv) + 'px';
				arrInsertDiv.style.display = 'block';				
				arrNodesDestination = subs[no];
				insertAsFirstNode = false;
				return;
			}				
		}
	}
	
	function arrangeNodeStopMove()
	{
		arrMoveCounter = -1; 
		arrInsertDiv.style.display='none';
		
		if(arrNodesDestination){
			var subs = arrParent.getElementsByTagName('LI');
			if(arrNodesDestination==subs[0] && insertAsFirstNode){
				arrParent.insertBefore(arrTarget,arrNodesDestination);		
			}else{
				if(arrNodesDestination.nextSibling){
					arrParent.insertBefore(arrTarget,arrNodesDestination.nextSibling);
				}else{
					arrParent.appendChild(arrTarget);
				}
			}
		}		
		arrNodesDestination = false;
		clearMovableDiv();
	}		
	
	function saveArrangableNodes()
	{
		var nodes = arrParent.getElementsByTagName('LI');
		var string = "";
		for(var no=0;no<nodes.length;no++){
			if(string.length>0)string = string + ',';
			string = string + nodes[no].id;		
		}
		
		document.forms[0].hiddenNodeIds.value = string;
		
		document.getElementById('arrDebug').innerHTML = 'Ready to save these nodes:<br>' + string.replace(/,/g,',<BR>');	
		
		}
	
	function initArrangableNodes()
	{
		arrParent = document.getElementById('arrangableNodes');
		arrMoveCont = document.getElementById('movableNode').getElementsByTagName('UL')[0];
		arrInsertDiv = document.getElementById('arrDestInditcator');
		
		leftPosArrangableNodes = getLeftPos(arrParent);
		arrInsertDiv.style.left = leftPosArrangableNodes - 5 + 'px';
		widthArrangableNodes = arrParent.offsetWidth;
		
		var subs = arrParent.getElementsByTagName('LI');
		for(var no=0;no<subs.length;no++){
			subs[no].onmousedown = initMoveNode;
			subs[no].onselectstart = cancelEvent;	
		}
	
		document.documentElement.onmouseup = arrangeNodeStopMove;
		document.documentElement.onmousemove = arrangeNodeMove;
		document.documentElement.onselectstart = cancelEvent;
		
	}	
	
	window.onload = initArrangableNodes;
	
	</script>

</head>
<body>

<H1>Arrange the nodes below</H1>
<ul id="arrangableNodes">
	<li id="node1">Node no. 1</li>
	<li id="node2">Node no. 2</li>
	<li id="node3">Node no. 3</li>
	<li id="node4">Node no. 4</li>
	<li id="node5">Node no. 5</li>
	<li id="node6">Node no. 6</li>
	<li id="node7">Node no. 7</li>
	<li id="node8">Node no. 8</li>	
	<li id="node9">Node no. 9</li>	
	<li id="node10">Node no. 10</li>	
	
</ul>	
<p>
	<a href="#" onclick="saveArrangableNodes();return false">Save</a>
</p>
<div id="movableNode"><ul></ul></div>	
<div id="arrDestInditcator"><img src="images/insert.gif"></div>
<div id="arrDebug"></div>
<form method="post" action="????">
<input type="hidden" name="hiddenNodeIds">
</form>

</body>
</html>

所屬頻道：層和布局特效/更新時間：2012-11-22

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JavaScript文章列表的拖拽排序_層和布局特效

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