<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<jsp:useBean id="mylist" scope="page" class="com.shaojung.shopping.CategoryDAO" />
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%
pageContext.setAttribute("catlist", mylist.getlistbyMainID(0));
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
<script language="javascript" type="text/javascript">
var request = new XMLHttpRequest();
function funclick()
{
var id = document.getElementById("MainID").value;
request.open("GET", "GetSubCategory.jsp?ID=" + id, false);
request.onreadystatechange = updatePage;
request.send(null);
}
function updatePage() {
if (request.readyState == 4)
if (request.status == 200)
{
var ops = request.responseText.split('|');
var selectbox=document.getElementById("SubID");
for (var j=ops.length-1;j>=0;j--)
{
selectbox.remove(j);
}
for (var i=0;i<ops.length;i++)
{
var new_option = new Option(ops[i], i);
selectbox.options.add(new_option);
}
}
// document.getElementById("show").innerHTML = request.responseText;
}
</script>
</head>
<body>
<p>
<label for="MainID">分類</label>
<select name="MainID" id="MainID" onchange="funclick()">
<c:forEach items="${catlist}" var="item">
<option value="${item.ID}">${item.CName}</option>
</c:forEach>
</select>
</p>
<p><span id="show"></span></p>
<label for="SubID">子分類</label>
<select name="SubID" id="SubID">
</select>
</body>
</html>
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