<script typet="text/javascript" src="http://libs.baidu.com/jquery/1.9.1/jquery.min.js"></script>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<body>
<form id="form1">
<div>
<select name=YYYY id="YYYY" onchange="YYYYMM(this.value)">
<option value="">选择 年</option>
</select>
<select name=MM id="MM" onchange="MMDD(this.value)">
<option value="">选择 月</option>
</select>
<select name=DD id="DD">
<option value="">选择 日</option>
</select>
</div>
<input id="hfValue" />
<button id="btnSave" text="保存" onclick="btnSave_Click()"></button>
</form>
</body>
</html>
<script language="JavaScript">
function getValue() {
var year = document.getElementById("YYYY").options[document.getElementById("YYYY").selectedIndex].value;
var month = document.getElementById("MM").options[document.getElementById("MM").selectedIndex].value;
var day = document.getElementById("DD").options[document.getElementById("DD").selectedIndex].value;
document.getElementById("hfValue").value = year + "-" + month + "-" + day;
}
window.onload = function () {
strYYYY = $('#YYYY').prop('outerHTML');// document.form1.YYYY.outerHTML;
strMM = $('#MM').prop('outerHTML');//document.form1.MM.outerHTML;
strDD = $('#DD').prop('outerHTML');//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 - 80) ; i < (y + 2) ; i++) //以今年为准，前30年，后30年
{
str += "<option value='" + i + "'> " + i + " 年" + "</option>
";
}
$('#YYYY').prop('outerHTML', str + "</select>") //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>
";
}
$('#MM').prop('outerHTML', str + '</select>') // document.form1.MM.outerHTML = str + "";
$('#MM').val(y);
$('#MM').val(new Date().getMonth() + 1); //document.form1.MM.value = new Date().getMonth() + 1;
var n = MonHead[new Date().getMonth()];
if (new Date().getMonth() == 1 && IsPinYear(YYYYvalue)) n++;
writeDay(n); //赋日期下拉框
$('#DD').val(new Date().getDate());// document.form1.DD.value = new Date().getDate();
}
function YYYYMM(str) //年发生变化时日期发生变化(主要是判断闰平年)
{
var MMvalue = $("#MM").val();//document.form1.MM.options[document.form1.MM.selectedIndex].value;
if (MMvalue == "") {
DD.outerHTML = strDD;
return;
}
var n = MonHead[MMvalue - 1];
if (MMvalue == 2 && IsPinYear(str)) n++;
writeDay(n)
}
function MMDD(str) //月发生变化时日期联动
{
var YYYYvalue = $("#YYYY").val();// document.form1.YYYY.options[document.form1.YYYY.selectedIndex].value;
if (str == "") {
DD.outerHTML = strDD;
return;
}
var n = MonHead[str - 1];
if (str == 2 && IsPinYear(YYYYvalue)) n++;
writeDay(n)
}
function writeDay(n) //据条件写日期的下拉框
{
var s = strDD.substring(0, strDD.length - 9);
for (var i = 1; i < (n + 1) ; i++) s += "<option value='" + i + "'> " + i + " 日" +
"</option>
";
$('#DD').prop('outerHTML', s + "</select>"); //document.form1.DD.outerHTML = s + "</select>";
}
function IsPinYear(year) //判断是否闰平年
{
return (0 == year % 4 && (year % 100 != 0 || year % 400 == 0))
}
</script>