一个脚本实现的无刷新连动日历

本文介绍了一个使用HTML和JavaScript实现的年月日三级联动下拉框选择器。该选择器可根据用户选择的年份自动调整二月的天数以反映是否为闰年，并在月份变化时更新对应的天数选项。

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这是客户端脚本:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Time.aspx.cs" Inherits="Time" %>

<!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 runat="server">
<title>年月日三下拉框联动</title>
<meta http-equiv='Content-Type' content='text/html; charset=gb2312'/>
</head>
<body>
<form id="form1" action="Time.aspx" runat="server">
<select name="YYYY" onchange="YYYYMM(this.value)">
<option value="">请选择年</option>
</select>
<select name="MM" onchange="MMDD(this.value)">
<option value="">选择月</option>
</select>
<select name="DD">
<option value="">选择日</option>
</select>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" /></form>
<script language="JavaScript" type="text/javascript"><!--
function window.onload()
{
strYYYY = document.form1.YYYY.outerHTML;
strMM = document.form1.MM.outerHTML;
strDD = document.form1.DD.outerHTML;
MonHead = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

//先给年下拉框赋内容
var y = new Date().getFullYear();
var str = strYYYY.substring(0, strYYYY.length - 9);
for (var i = (y-100); i < (y+1); i++) //以今年为准，前100年，后1年
{
str += "<option value='" + i + "'> " + i + " 年" + "</option>/r/n";
}
document.form1.YYYY.outerHTML = str +"</select>";

//赋月份的下拉框
var str = strMM.substring(0, strMM.length - 9);
for (var i = 1; i < 13; i++)
{
str += "<option value='" + i + "'> " + i + " 月" + "</option>/r/n";
}
document.form1.MM.outerHTML = str +"</select>";

后台取值:

protected void Button1_Click(object sender, EventArgs e)
    {
        string strYY = Request.Form["YYYY"].ToString();
        string strMM = Request.Form["MM"].ToString();
        string strDD=Request.Form["DD"].ToString();
        Response.Write(strYY+"-"+strMM+"-"+strDD);
    }