当前页面: 开发资料首页 → Javascript 专题 → 前些时无聊，用javascript写的一颗树
前些时无聊，用javascript写的一颗树
摘要: 前些时无聊，用javascript写的一颗树
<head>
<script language="javascript">
function addLeaf(parentID)
{
var leafHTML='';
var bh=0;
var node_path,parent;
bh = parseInt(lsh.value)+1;1
lsh.value = bh;
if(parentID != 0)
{
parent = document.getElementById('tree_path_' + parentID);
node_path = parent.value + ',' + bh;
parent = document.getElementById('tree_UL_' + parentID);
}
else
{
parent = document.getElementById('tree_div_0');
node_path = '0,' + bh;
}
// alert('');
leafHTML = '
leafHTML = leafHTML + '
leafHTML = leafHTML + '<input id=tree_nodeName_' + bh;
leafHTML = leafHTML + '<input id=tree_path_' + bh + ' type=hidden value=' + node_path + '>';
leafHTML = leafHTML + '<input id=tree_parent_' + bh + ' type=hidden value=' + parentID + '>';
leafHTML = leafHTML + '<input id=tree_state_' + bh + ' type=hidden value=insert>';
leafHTML = leafHTML + '<input id=tree_change_' + bh + ' type=hidden value=insert>';
leafHTML = leafHTML + '<input id=tree_vision_' + bh + ' type=hidden value=1>';
leafHTML = leafHTML + '<input type=button value=加子节点 onclick=addLeaf(' + bh + ');>';
leafHTML = leafHTML + '<input type=button value=删该节点 onclick=delLeaf(' + bh +');>';
leafHTML = leafHTML + '<input type=button value=调整位置 onclick=changeParent(' + bh + ');>' + '
leafHTML = leafHTML + '
leafHTML = leafHTML + '
parent.innerHTML = parent.innerHTML + leafHTML;
}
function delLeaf(nodeID)
{
var temp_node;
temp_node = document.getElementById('tree_div_' + nodeID);
if(temp_node != null)
{
temp_node.style.display = 'none';
temp_node = document.getElementById('tree_state_' + nodeID);
temp_node.value = 'delete';
temp_node = document.getElementById('tree_change_' + nodeID);
temp_node.value = temp_node.value + ', delete';
}
}
function hidenode(nodeID)
{
var leafUL;
if(LeafID != null)
{
leafUL = document.getElementById('node_' + nodeID);
if(leafUL != null)
{
// alert(leafUL.id + '**' + LeafID.id);
leafUL.style.display='none';
LeafID.style.display='none';
}
}
}
function changesize(node)
{
if(node != null)
{
node.size = node.value.length * 2;
}
}
function changeParent(nodeID)
{
var node,parent,tempNode;
var tempStr,tempNodeID;
if(newparent.value == null || newparent.value == '')
{
alert('请选择一个节点作为父节点！！！');
return false;
}
node = document.getElementById('tree_div_' + nodeID);
parent = document.getElementById('tree_UL_' + newparent.value);
if(node != null && parent !=null)
{
tempNode = document.getElementById('tree_path_' + newparent.value);
tempStr = tempNode.value;
if(tempStr.lastIndexOf(',' + nodeID) == (tempStr.length-nodeID.toString().length-1))
{
alert('请不要选择自己作为父节点！！！');
return false;
}
else
{
if(tempStr.indexOf(',' + nodeID + ',') != -1)
{
alert('请不要选择子节点作为父节点！！！');
return false;
}
else
{
tempNode = document.getElementById('tree_path_' + nodeID);
if((tempStr + ',' + nodeID ) == tempNode.value)
{
alert('您选择的已经是此节点的父节点！！！');
return false;
}
}
}
tempNodeID = node.id;
tempStr = node.innerHTML;
// node.innerHTML = 'blank';
//node.style.display = 'none';
// node.id = 'del_' + tempNodeID;
node.outerHTML ='';
parent.innerHTML = parent.innerHTML + '
tempNode = document.getElementById(tempNodeID);
tempNode.innerHTML = tempStr;
tempNode = document.getElementById('tree_path_' + nodeID);
parent = document.getElementById('tree_path_' + newparent.value);
tempNode.value = parent.value + ',' + nodeID;
tempNode = document.getElementById('tree_parent_' + nodeID);
tempNode.value = parent.value + ',' + newparent.value;
tempNode = document.getElementById('tree_change_' + nodeID);
tempNode.value = tempNode.value + ',changeParent';
tempNode = document.getElementById('tree_state_' + nodeID);
tempNode.value = 'changeParent';
updateNode(nodeID);
}
}
function updateNode(parentID)
{
var tempNode,tempParent,nodeList;
var i=0;
tempParent = document.getElementById('tree_path_' + parentID);
nodeList = document.getElementsByTagName('input');
for(i=0;i
if(nodeList(i).id.substring(0,12) == 'tree_parent_' && nodeList(i).value == parentID)
{
tempNode = document.getElementById('tree_path_' + nodeList(i).id.substring(12,nodeList(i).id.length));
tempNode.value = tempParent.value + ',' + nodeList(i).id.substring(12,nodeList(i).id.length);
updateNode(nodeList(i).id.substring(12,nodeList(i).id.length));
}
}
}
</script>
</head>
<body>
<input type=button id="ldsk" value="点击增加节点" onclick="addLeaf(0);"><input id="newparent" type=text value=''>
<input type=button id="ldssk" value="显示选定节点的源码" onclick="getdiv.value = tree_div_0.innerHTML;">
<textarea id="getdiv" cols=80 rows=23></textarea>
<input id="lsh" type=hidden value='0'>
</body>