年月日三級連動メニュー
6639 ワード
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title> </title>
<script type="text/javascript">
//
function DateSelector(selYear, selMonth, selDay)
{
this.selYear = selYear;
this.selMonth = selMonth;
this.selDay = selDay;
this.selYear.Group = this;
this.selMonth.Group = this;
// 、 onchange
if(window.document.all != null){
//IE
this.selYear.attachEvent("onchange", DateSelector.Onchange);
this.selMonth.attachEvent("onchange", DateSelector.Onchange);
}
else{
// Firefox
this.selYear.addEventListener("change", DateSelector.Onchange, false);
this.selMonth.addEventListener("change", DateSelector.Onchange, false);
}
if(arguments.length == 4) {
// 4， Date
this.InitSelector(arguments[3].getFullYear(), arguments[3].getMonth() + 1, arguments[3].getDate());
} else if(arguments.length == 6) {
// 6，
this.InitSelector(arguments[3], arguments[4], arguments[5]);
} else {
//
var dt = new Date();
this.InitSelector(dt.getFullYear(), dt.getMonth() + 1, dt.getDate());
}
}
//
DateSelector.prototype.MinYear = (new Date()).getFullYear();
//
DateSelector.prototype.MaxYear = 2020;
//
DateSelector.prototype.InitYearSelect = function() {
// OPION select
for(var i = this.MinYear; i <= this.MaxYear; i++) {
// OPTION
var op = window.document.createElement("OPTION");
// OPTION
op.value = i;
// OPTION
op.innerHTML = i;
// select
this.selYear.appendChild(op);
}
}
//
DateSelector.prototype.InitMonthSelect = function() {
// OPION select
for(var i = 1; i < 13; i++)
{
// OPTION
var op = window.document.createElement("OPTION");
// OPTION
op.value = i;
// OPTION
op.innerHTML = i;
// select
this.selMonth.appendChild(op);
}
}
//
DateSelector.DaysInMonth = function(year, month) {
var date = new Date(year, month, 0);
return date.getDate();
}
//
DateSelector.prototype.InitDaySelect = function() {
// parseInt
var year = parseInt(this.selYear.value);
var month = parseInt(this.selMonth.value);
//
var daysInMonth = DateSelector.DaysInMonth(year, month);
//
this.selDay.options.length = 0;
// OPION select
for(var i = 1; i <= daysInMonth ; i++) {
// OPTION
var op = window.document.createElement("OPTION");
// OPTION
op.value = i;
// OPTION
op.innerHTML = i;
// select
this.selDay.appendChild(op);
}
}
// onchange ，
// Group InitDaySelect
// e event
DateSelector.Onchange = function(e) {
var selector = window.document.all != null ? e.srcElement : e.target;
selector.Group.InitDaySelect();
}
//
DateSelector.prototype.InitSelector = function(year, month, day) {
// ， selYear selMonth
// InitDaySelect ，
this.selYear.options.length = 0;
this.selMonth.options.length = 0;
// 、
this.InitYearSelect();
this.InitMonthSelect();
// 、
this.selYear.selectedIndex = this.MinYear - year;
this.selMonth.selectedIndex = month - 1;
//
this.InitDaySelect();
//
this.selDay.selectedIndex = day - 1;
}
</script>
</head>
<body>
<form id="form1" action="">
<select id="selYear"></select>
<select id="selMonth"></select>
<select id="selDay"></select>
</form>
</body>
</html>
<script type="text/javascript">
var selYear = window.document.getElementById("selYear");
var selMonth = window.document.getElementById("selMonth");
var selDay = window.document.getElementById("selDay");
var now = new Date();
// ，
new DateSelector(selYear,selMonth,selDay);
//new DateSelector(selYear, selMonth ,selDay, now);
//new DateSelector(selYear, selMonth ,selDay, now.getFullYear(), now.getMonth()+1, now.getDate());
</script>