如何用Javascript对treeView控件的选中Checkbox项的取值问题？？急！！

Question

如题！
TreeView控件，设置ShowCheckBoxes="All"(即设置复选框)，后台进行取值！当选中父节点后，则子节点自动选择。（这一步js已经实现）。问：
如何用javascript获取已选中节点的子节点的值？？？TreeView只有两级，即只有父节点和子结点。

Answer 1

既然你都已经可以获得节点了，还不知道怎么获值？？
for(var i =0;i<obj.length;i++)
{
    return obj[i].value;
}

Answer 2

输出后将节点要取得的值隐藏到node的Text部分，选中时，将隐藏的部分取出并用特殊标记分割放到一个hiddenfield中，然后通过一个服务端属性开放出来就OK了。

Answer 3

<asp:TreeView ID="TreeView1" runat="server" onclick="javascript:client_OnTreeNodeChecked();" NodeIndent="10" ShowCheckBoxes="All" ShowLines="True">
function checkParent (obj)
        {
            while(obj != null) 
            {
                var tagName = obj.tagName.toLowerCase();
                if(tagName == "div" && obj.id == "TreeView1")
                {
                    return;
                }
                
                if(tagName == "table")
                {
                    var checkBox = obj.getElementsByTagName("INPUT");
                    if(checkBox.length >0)
                    { 
                        checkBox[0].checked = true;
                    }
                    obj = obj.parentElement.previousSibling;
                }
                else
                    obj = obj.parentElement;
             }
        }
                    
        function client_OnTreeNodeChecked()
        {
            var obj = window.event.srcElement;
            var treeNodeFound = false;
            var checkedState;
            if (obj.tagName == "INPUT" && obj.type == "checkbox")
            {
                var treeNode = obj;
                checkedState = treeNode.checked;
                
                if(checkedState)
                {
                    checkParent(obj);
                }
                
                do
                {
                    obj = obj.parentElement;
                }
                while (obj.tagName != "TABLE")
                
                var parentTreeLevel = obj.rows[0].cells.length;
                var parentTreeNode = obj.rows[0].cells[0];
                
                var tables = obj.parentElement.getElementsByTagName("TABLE");
                var numTables = tables.length
                if (numTables >= 1)
                {
                    for (i=0; i < numTables; i++)
                    {
                       if(tables[i] == obj)
                       {
                            treeNodeFound = true;
                            i++;
                            if(i == numTables)
                            {
                                return;
                            }
                        }
                        if (treeNodeFound == true)
                        {
                            var childTreeLevel = tables[i].rows[0].cells.length;
                            if (childTreeLevel > parentTreeLevel)
                            {
                                var cell = tables[i].rows[0].cells[childTreeLevel - 1];
                                var inputs = cell.getElementsByTagName("INPUT");
                                inputs[0].checked = checkedState;
                            }
                            else
                            {
                                return;
                            }
                        }
                    }
                }
            }
        }