标签：javascript视频教程,javascript教程下载,
Javascript关于树形菜单，Checkbox的全选,
<!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>
<title>Checkbox</title>
<meta name="generator" content="editplus" />
<style type="text/css">
body{font-size:12px;}
.panel {BORDER-RIGHT: #d4d0c8 3px double; OVERFLOW-Y: scroll; PADDING-LEFT: 5px; BORDER-TOP: #d4d0c8 2px ridge; BORDER-LEFT: #808080 2px ridge; BORDER-BOTTOM: #d4d0c8 3px double; HEIGHT: 250px}
.parent {PADDING-LEFT: 15px}
.child {PADDING-LEFT: 30px}
</style>
<script type="text/javascript">
// CheckBoxList 选框
function chkbox(obj)
{
var chk = obj.all.tags("input");
var count = chk.length;
if (event.srcElement.tagName == "INPUT")
{
with (event.srcElement)
{
// 全选
if (parentElement.pid == "-1")
{
for (var i=0; i<count; i++)
{
chk[i].checked = checked;
}
}
// 父类
if (parentElement.pid == "0")
{
chk[0].checked = checked;
for (var i=0; i<count; i++)
{
if (chk[i].parentElement.pid == parentElement.id) chk[i].checked = checked
if (!chk[i].checked) chk[0].checked = false;
}
}
// 子类
if (parentElement.pid > "0")
{
chk[0].checked = checked;
var parentObj; // 父类对象
for (var i=0; i<count; i++)
{
if (chk[i].parentElement.id == parentElement.pid) // 选中父类
{
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，Javascript关于树形菜单，Checkbox的全选
