javaScript 实现的年月日三级联动
// JavaScript Document 2010-06-03 zhoux
//年份下拉框Id,月份下拉框Id,日期下拉框Id,起始年(null则默认1970),结束年(null则默认当前年)
function TearoomRoom(year, month, day, startYear, endYear) {
if (null == startYear) {
startYear = "1970";
}
if (null == endYear) {
endYear = new Date().getFullYear();
}
//输出年
for (; startYear <= endYear; startYear++) {
$("#" + year).append("<option value=" + startYear + ">" + startYear + "</option>");
}
//输出月
for (var i = 1; i <= 12; i++) {
$("#" + month).append("<option value=" + ((i < 10) ? "0" + i : i) + ">" + i + "</option>");
}
//输出日期
if (null != day) {
$(document).ready(function () {//添加onchange事件
$("#" + year).change(function () {
displaySelectDay($("#" + year).val(), $("#" + month).val(), day);
});
$("#" + month).change(function () {
displaySelectDay($("#" + year).val(), $("#" + month).val(), day);
});
});
displaySelectDay($("#" + year).val(), $("#" + month).val(), day);
}
}
//是否是润年
function isLeapYear(year) {
if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
return true;
}
return false;
}
//显示日下拉框
function displaySelectDay(year, month, selectDayId) {
if (null != year && null != month && !isNaN(year) && !isNaN(month)) {
var monthArr = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];//月份的天数
var day = (isLeapYear(year) && month == 2) ? monthArr[month - 1] + 1 : monthArr[month - 1];
$("#" + selectDayId + ">option").remove();//清空option项
for (var i = 1; i <= day; i++) {
$("#" + selectDayId).append("<option value=" + ((i < 10) ? "0" + i : i) + ">" + i + "</option>");
}
}
}
以上是一个方法,使用了JQuery 它针对id 添加onchange 事件，调用如下
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>年月日级联更新</title>
<script language="javascript" type="text/javascript" src="../JS/jquery-1.4.1.js"></script>
<script language="javascript" type="text/javascript" src="dateSelect.js"></script>
<script language="javascript" type="text/javascript">
//new TearoomRoom("year","month","day","1995","2020") 分别是年Id,月Id,日Id,起始年，终止年
$(document).ready(function(){$("#timeButton").click(function(){new TearoomRoom("year","month","day","1995","2020");});});
//如不输入起始年1970~当前年
//$(document).ready(function(){$("#timeButton").click(function(){new TearoomRoom("year","month","day",null,null);});});
//日期可以为null,此时不操作日期
//$(document).ready(function(){$("#timeButton").click(function(){new TearoomRoom("year","month",null,"1995","2020");});});
</script>
</head>
<body>
<select id="year" name="year">
</select>
<select id="month" name="month">
</select>
<select id="day" name="day">
</select>
<button type="button" id="timeButton">
设置时间
</button>
</body>
</html>