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年月日下拉联动代码

2012-11-27 17:46 204 查看
这是JS的代码:

function getSDay(){
var year ;
var month ;
var maxday=0 ;

with( document.sedate.syear ){
year = options[selectedIndex].text;
}

with( document.sedate.smonth ){
month = options[selectedIndex].text;
}

if( month==1 | month==3 | month==5 | month==7 | month==8 | month==10 | month==12 ){
maxday = 31 ;
}else if( month==4 | month==6 | month==9 | month==11 ){
maxday = 30 ;
}else if( month == 2 ){
if( (year%4==0 & year%100!=0) | year%400==0 ){
maxday = 29 ;
}else{
maxday = 28 ;
}
}

with( document.sedate.sday ){
length = maxday+1;
options[0].text="--不限";
options[0].value="--不限";
for( var i=1;i<maxday+1;i++ ){
options[i].text=i;
options[i].value=i;
}
}
}

function getEDay(){
var year ;
var month ;
var maxday=0 ;

with( document.sedate.eyear ){
year = options[selectedIndex].text;
}

with( document.sedate.emonth ){
month = options[selectedIndex].text;
}

if( year!="--不限" ){
if( month==1 | month==3 | month==5 | month==7 | month==8 | month==10 | month==12 ){
maxday = 31 ;
}else if( month==4 | month==6 | month==9 | month==11 ){
maxday = 30 ;
}else if( month == 2 ){
if( (year%4==0 & year%100!=0) | year%400==0 ){
maxday = 29 ;
}else{
maxday = 28 ;
}
}
}

with( document.sedate.eday ){
length = maxday+1;
options[0].text="--不限";
options[0].value="--不限";
for( var i=1;i<maxday+1;i++ ){
options[i].text=i;
options[i].value=i;
}
}
}
这是JSP的代码:
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'date.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<script language="javascript" src="MyJavaScript/date.js" ></script>
</head>

<body>
<form action="" name="sedate">

<table border="1"  width="1000" align="center" >
<tr>
<td>
选择时间:
</td>
<td>
<select  name="syear" onchange="getSDay()" >
<option selected>--不限</option>
<%
for( int i=0;i<30;i++ ){
%>
<option><%=1990+i%></option>
<% }%>
</select>

</td>
<td>
年
</td>
<td>
<select name="smonth" onchange="getSDay()">
<option selected>--不限</option>
<%
for( int i=1;i<13;i++ ){
%>
<option ><%=i%></option>
<% }%>
</select>
</td>
<td>
月
</td>
<td>
<select name="sday" >
<option selected>--不限</option>
</select>
</td>
<td>
日
</td>
<td>
至
</td>
<td>
<select name="eyear"  onchange="getEDay()">
<option selected>--不限</option>
<%
for( int i=0;i<30;i++ ){
%>
<option><%=1990+i%></option>
<% }%>
</select>
</td>
<td>
年
</td>
<td>
<select name="emonth" onchange="getEDay()">
<option selected>--不限</option>
<%
for( int i=1;i<13;i++ ){
%>
<option ><%=i%></option>
<% }%>
</select>
</td>
<td>
月
</td>
<td>
<select name="eday">
<option selected>--不限</option>
</select>
</td>
<td>
日
</td>
</tr>
</table>
</form>
</body>
</html>


在WEBROOT下建个文件夹MyJavaScript,把JS放进去,然后把文件夹和JS放WEBROT下,就可以了。
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