Javascript 实现TreeView CheckBox全选效果

function OnTreeNodeChecked() { 
var ele = event.srcElement; 
if (ele.type == 'checkbox') { 
var childrenDivID = ele.id.replace('CheckBox', 'Nodes'); 
var div = document.getElementById(childrenDivID); 
if (div != null) { 
var checkBoxs = div.getElementsByTagName('INPUT'); 
for (var i = 0; i < checkBoxs.length; i++) { 
if (checkBoxs[i].type == 'checkbox') 
checkBoxs[i].checked = ele.checked; 
} 
} 
OnTreeNodeChildChecked(ele); } 
} 
function OnTreeNodeChildChecked(ele) { 
//自动处理上级 
var parentDiv = ele.parentElement.parentElement.parentElement.parentElement.parentElement; 
var parentChkBox = document.getElementById(parentDiv.id.replace('Nodes', 'CheckBox')); 
if (parentChkBox != null) { 
var ChildsChkAll = true; 
var Boxs = parentDiv.getElementsByTagName('INPUT'); 
for (var i = 0; i < Boxs.length; i++) { 
if (Boxs[i].type == 'checkbox' && Boxs[i].checked == false) { 
ChildsChkAll = false; 
} 
} 
parentChkBox.checked = ChildsChkAll; 
OnTreeNodeChildChecked(parentChkBox); 
} 
}

CS文件中注册JavaScript：

void Page_Load(object sender,EventArgs e) 
{ 
this.TreeView.Attribute.Add("onclick","OnTreeNodeChecked()"); 
}