网站后台遇到一个技术问题?
我在做网站后台时,需要做一个下面这样的效果:
分类管理 (按钮)
一级分类管理
二级分类管理
三级分类管理
图书类别转移
当点击按钮时,下面的内容“一级分类管理,二。。。”,回收上去,应该是用JS实现的吧?谁那有代码,可以让我参考参考吗?谢过了。。
------解决方案--------------------用strutsmenu.jar
------解决方案-------------------- <%@ page contentType= "text/html; charset=gb2312 " language= "java "
errorPage= " " %>
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<title> 无标题文档 </title>
<script language= "javascript ">
var http_request = false;
var currentPos = null;
function send_request(url) {//初始化、指定处理函数、发送请求的函数
http_request = false;
//开始初始化XMLHttpRequest对象
if(window.XMLHttpRequest) { //Mozilla 浏览器
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType) {//设置MiME类别
http_request.overrideMimeType( 'text/xml ');
}
}
else if (window.ActiveXObject) { // IE浏览器
try {
http_request = new ActiveXObject( "Msxml2.XMLHTTP ");
} catch (e) {
try {
http_request = new ActiveXObject( "Microsoft.XMLHTTP ");
} catch (e) {}
}
}
if (!http_request) { // 异常,创建对象实例失败
window.alert( "不能创建XMLHttpRequest对象实例. ");
return false;
}
http_request.onreadystatechange = processRequest;
// 确定发送请求的方式和URL以及是否同步执行下段代码
http_request.open( "GET ", url, true);
http_request.send(null);
}
// 处理返回信息的函数
function processRequest() {
if (http_request.readyState == 4) { // 判断对象状态
if (http_request.status == 200) { // 信息已经成功返回,开始处理信息
//alert(http_request.responseText);
document.getElementById(currentPos).innerHTML = http_request.responseText;
} else { //页面不正常
alert( "您所请求的页面有异常。 ");
}
}
}
//显示部门下的岗位
function showRoles(obj) {
document.getElementById(obj).parentNode.style.display = " ";
document.getElementById(obj).innerHTML = "正在读取数据... "
currentPos = obj;
send_request( "sample2_2.jsp?playPos= "+obj);
}
</script>
<link href= "css/style.css " rel= "stylesheet " type= "text/css ">
</head>
<body>
<table width= "200 " border= "0 " cellspacing= "0 " cellpadding= "0 ">
<tr>
<td height= "20 "> <a href= "javascript:void(0) " onClick= "showRoles( 'pos_1 ') "> 经理室 </a> </td>
</tr>
<tr style= "display:none ">
<td height= "20 " id= "pos_1 "> </td>
</tr>
<tr>
<td height= "20 "> <a href= "javascript:void(0) " onClick= "showRoles( 'pos_2 ') "> 开发部 </a> </td>
</tr>
<tr style= "display:none ">
<td id= "pos_2 " height= "20 "> </td>
</tr>