转一个日期输入控件，支持FF_时间日期



/**
* 返回日期
* @param d the delimiter
* @param p the pattern of your date
* @author Xinge(修改)
*/
String.prototype.toDate = function(x, p) {
if(x == null) x = "-";
if(p == null) p = "ymd";
var a = this.split(x);
var y = parseInt(a[p.indexOf("y")]);
//remember to change this next century ;)
if(y.toString().length <= 2) y += 2000;
if(isNaN(y)) y = new Date().getFullYear();
var m = parseInt(a[p.indexOf("m")]) - 1;
var d = parseInt(a[p.indexOf("d")]);
if(isNaN(d)) d = 1;
return new Date(y, m, d);
}

/**
* 格式化日期
* @param d the delimiter
* @param p the pattern of your date
* @author Xinge(修改)
*/
Date.prototype.format = function(style) {
var o = {
"M+" : this.getMonth() + 1, //month
"d+" : this.getDate(), //day
"h+" : this.getHours(), //hour
"m+" : this.getMinutes(), //minute
"s+" : this.getSeconds(), //second
"w+" : "天一二三四五六".charAt(this.getDay()), //week
"q+" : Math.floor((this.getMonth() + 3) / 3), //quarter
"S" : this.getMilliseconds() //millisecond
}
if(/(y+)/.test(style)) {
style = style.replace(RegExp.$1,
(this.getFullYear() + "").substr(4 - RegExp.$1.length));
}
for(var k in o){
if(new RegExp("("+ k +")").test(style)){
style = style.replace(RegExp.$1,
RegExp.$1.length == 1 ? o[k] :
("00" + o[k]).substr(("" + o[k]).length));
}
}
return style;
};

/**
* 日历类
* @param beginYear 1990
* @param endYear 񎧚
* @param lang ŀ(中文)|1(英语) 可自由扩充
* @param dateFormatStyle "yyyy-MM-dd";
* @version 2007-03-16
* @author Xinge(修改)
* @update
*/
function Calendar(lang,beginYear,endYear,dateFormatStyle) {
this.beginYear = 1990;
this.endYear = 2010;
this.lang = 0; //0(中文) | 1(英文)
this.dateFormatStyle = "yyyy-MM-dd";

if (beginYear != null && endYear != null){
this.beginYear = beginYear;
this.endYear = endYear;
}
if (lang != null){
this.lang = lang
}

if (dateFormatStyle != null){
this.dateFormatStyle = dateFormatStyle
}

this.dateControl = null;
this.panel = this.getElementById("calendarPanel");
this.form = null;

this.date = new Date();
this.year = this.date.getFullYear();
this.month = this.date.getMonth();

this.colors = {
"cur_word" : "#FFFFFF", //当日日期文字颜色
"cur_bg" : "#00FF00", //当日日期单元格背影色
"sun_word" : "#FF0000", //星期天文字颜色
"sat_word" : "#0000FF", //星期六文字颜色
"td_word_light" : "#000000", //单元格文字颜色
"td_word_dark" : "#CCCCCC", //单元格文字暗色
"td_bg_out" : "#FFFFFF", //单元格背影色
"td_bg_over" : "#FFCC00", //单元格背影色
"tr_word" : "#FFFFFF", //日历头文字颜色
"tr_bg" : "#FF6600", //日历头背影色
"input_border" : "#CCCCCC", //input控件的边框颜色
"input_bg" : "#EFEFEF" //input控件的背影色
}

this.draw();
this.bindYear();
this.bindMonth();
this.changeSelect();
this.bindData();
}

/**
* 日历类属性（语言包，可自由扩展）
*/
Calendar.language = {
"year" : [[""], [""]],
"months" : [["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],
["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"]
],
"weeks" : [["日","一","二","三","四","五","六"],
["SUN","MON","TUR","WED","THU","FRI","SAT"]
],
"clear" : [["清空"], ["CLS"]],
"today" : [["今天"], ["TODAY"]],
"close" : [["关闭"], ["CLOSE"]]
}

Calendar.prototype.draw = function() {
calendar = this;

var mvAry = [];
mvAry[mvAry.length] = ' ';
this.panel.innerHTML = mvAry.join("");
this.form = document.forms["calendarForm"];

this.form.prevMonth.onclick = function () {calendar.goPrevMonth(this);}
this.form.nextMonth.onclick = function () {calendar.goNextMonth(this);}

this.form.calendarClear.onclick = function () {calendar.dateControl.value = "";calendar.hide();}
this.form.calendarClose.onclick = function () {calendar.hide();}
this.form.calendarYear.onchange = function () {calendar.update(this);}
this.form.calendarMonth.onchange = function () {calendar.update(this);}
this.form.calendarToday.onclick = function () {
var today = new Date();
calendar.date = today;
calendar.year = today.getFullYear();
calendar.month = today.getMonth();
calendar.changeSelect();
calendar.bindData();
calendar.dateControl.value = today.format(calendar.dateFormatStyle);
calendar.hide();
}

}

//年份下拉框绑定数据
Calendar.prototype.bindYear = function() {
var cy = this.form.calendarYear;
cy.length = 0;
for (var i = this.beginYear; i <= this.endYear; i++){
cy.options[cy.length] = new Option(i + Calendar.language["year"][this.lang], i);
}
}

//月份下拉框绑定数据
Calendar.prototype.bindMonth = function() {
var cm = this.form.calendarMonth;
cm.length = 0;
for (var i = 0; i < 12; i++){
cm.options[cm.length] = new Option(Calendar.language["months"][this.lang][i], i);
}
}

//向前一月
Calendar.prototype.goPrevMonth = function(e){
if (this.year == this.beginYear && this.month == 0){return;}
this.month--;
if (this.month == -1) {
this.year--;
this.month = 11;
}
this.date = new Date(this.year, this.month, 1);
this.changeSelect();
this.bindData();
}

//向后一月
Calendar.prototype.goNextMonth = function(e){
if (this.year == this.endYear && this.month == 11){return;}
this.month++;
if (this.month == 12) {
this.year++;
this.month = 0;
}
this.date = new Date(this.year, this.month, 1);
this.changeSelect();
this.bindData();
}

//改变SELECT选中状态
Calendar.prototype.changeSelect = function() {
var cy = this.form.calendarYear;
var cm = this.form.calendarMonth;
for (var i= 0; i < cy.length; i++){
if (cy.options[i].value == this.date.getFullYear()){
cy[i].selected = true;
break;
}
}
for (var i= 0; i < cm.length; i++){
if (cm.options[i].value == this.date.getMonth()){
cm[i].selected = true;
break;
}
}
}

//更新年、月
Calendar.prototype.update = function (e){
this.year = e.form.calendarYear.options[e.form.calendarYear.selectedIndex].value;
this.month = e.form.calendarMonth.options[e.form.calendarMonth.selectedIndex].value;
this.date = new Date(this.year, this.month, 1);
this.changeSelect();
this.bindData();
}

//绑定数据到月视图
Calendar.prototype.bindData = function () {
var calendar = this;
var dateArray = this.getMonthViewArray(this.date.getYear(), this.date.getMonth());
var tds = this.getElementById("calendarTable").getElementsByTagName("td");
for(var i = 0; i < tds.length; i++) {
//tds[i].style.color = calendar.colors["td_word_light"];
tds[i].style.backgroundColor = calendar.colors["td_bg_out"];
tds[i].onclick = function () {return;}
tds[i].onmouseover = function () {return;}
tds[i].onmouseout = function () {return;}
if (i > dateArray.length - 1) break;
tds[i].innerHTML = dateArray[i];
if (dateArray[i] != " "){
tds[i].onclick = function () {
if (calendar.dateControl != null){
calendar.dateControl.value = new Date(calendar.date.getFullYear(),
calendar.date.getMonth(),
this.innerHTML).format(calendar.dateFormatStyle);
}
calendar.hide();
}
tds[i].onmouseover = function () {
this.style.backgroundColor = calendar.colors["td_bg_over"];
}
tds[i].onmouseout = function () {
this.style.backgroundColor = calendar.colors["td_bg_out"];
}
if (new Date().format(calendar.dateFormatStyle) ==
new Date(calendar.date.getFullYear(),
calendar.date.getMonth(),
dateArray[i]).format(calendar.dateFormatStyle)) {
//tds[i].style.color = calendar.colors["cur_word"];
tds[i].style.backgroundColor = calendar.colors["cur_bg"];
tds[i].onmouseover = function () {
this.style.backgroundColor = calendar.colors["td_bg_over"];
}
tds[i].onmouseout = function () {
this.style.backgroundColor = calendar.colors["cur_bg"];
}
}//end if
}
}
}

//根据年、月得到月视图数据(数组形式)
Calendar.prototype.getMonthViewArray = function (y, m) {
var mvArray = [];
var dayOfFirstDay = new Date(y, m, 1).getDay();
var daysOfMonth = new Date(y, m + 1, 0).getDate();
for (var i = 0; i < 42; i++) {
mvArray[i] = " ";
}
for (var i = 0; i < daysOfMonth; i++){
mvArray[i + dayOfFirstDay] = i + 1;
}
return mvArray;
}

//扩展 document.getElementById(id) 多浏览器兼容性
Calendar.prototype.getElementById = function(id){
if (typeof(id) != "string" || id == "") return null;
if (document.getElementById) return document.getElementById(id);
if (document.all) return document.all(id);
try {return eval(id);} catch(e){ return null;}
}

//扩展 object.getElementsByTagName(tagName)
Calendar.prototype.getElementsByTagName = function(object, tagName){
if (document.getElementsByTagName) return document.getElementsByTagName(tagName);
if (document.all) return document.all.tags(tagName);
}

//取得HTML控件绝对位置
Calendar.prototype.getAbsPoint = function (e){
var x = e.offsetLeft;
var y = e.offsetTop;
while(e = e.offsetParent){
x += e.offsetLeft;
y += e.offsetTop;
}
return {"x": x, "y": y};
}

//显示日历
Calendar.prototype.show = function (dateControl, popControl) {
if (dateControl == null){
throw new Error("arguments[0] is necessary")
}
this.dateControl = dateControl;
if (dateControl.value.length > 0){
this.date = new Date(dateControl.value.toDate());
this.year = this.date.getFullYear();
this.month = this.date.getMonth();
this.changeSelect();
this.bindData();
}
if (popControl == null){
popControl = dateControl;
}
var xy = this.getAbsPoint(popControl);
this.panel.parentNode.style.left = xy.x + "px";
this.panel.parentNode.style.top = (xy.y + dateControl.offsetHeight) + "px";
this.panel.parentNode.style.visibility = "visible";
}

//隐藏日历
Calendar.prototype.hide = function() {
this.panel.parentNode.style.visibility = "hidden";
}

var html = ' position:absolute;visibility:hidden;z-index:9999;background-color:#fff;border:2px solid #ccc;width:225px;font-size:12px;\
">\
\
';
document.write(html);

//英文：
new Calendar(1).show(this)
-->
readOnly size="23" value="2007-03-16" name=postTime>