日期选择代码[Javascript]
[ 2005-10-25 11:53:52 | 作者: dodo ]
<script>
// Customizable variables
var DefaultDateFormat = 'MM/DD/YYYY'; // If no date format is supplied, this will be used instead
var HideWait = 3; // Number of seconds before the calendar will disappear
var Y2kPivotPoint = 76; // 2-digit years before this point will be created in the 21st century
var UnselectedMonthText = ''; // Text to display in the 1st month list item when the date isn't required
var FontSize = 11; // In pixels
var FontFamily = 'Tahoma';
var CellWidth = 18;
var CellHeight = 16;
var ImageURL = 'calendar.jpg';
var NextURL = 'next.gif';
var PrevURL = 'prev.gif';
var CalBGColor = 'white';
var TopRowBGColor = 'buttonface';
var DayBGColor = 'lightgrey';
// Global variables
var ZCounter = 100;
var Today = new Date();
var WeekDays = new Array('S','M','T','W','T','F','S');
var MonthDays = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
var MonthNames = new Array('January',
'February',
'March','April','May','June','July','August','September','October','November','December');
// Write out the stylesheet definition for the calendar
with (document) {
writeln('<style>');
writeln('td.calendarDateInput {letter-spacing:normal;line-height:normal;font-family:' + FontFamily + ',Sans-Serif;font-size:' + FontSize + 'px;}');
writeln('select.calendarDateInput {letter-spacing:.06em;font-family:Verdana,Sans-Serif;font-size:11px;}');
writeln('input.calendarDateInput {letter-spacing:.06em;font-family:Verdana,Sans-Serif;font-size:11px;}');
writeln('</style>');
}
// Only allows certain keys to be used in the date field
function YearDigitsOnly(e) {
var KeyCode = (e.keyCode) ? e.keyCode : e.which;
return ((KeyCode == 8) // backspace
|| (KeyCode == 9) // tab
|| (KeyCode == 37) // left arrow
|| (KeyCode == 39) // right arrow
|| (KeyCode == 46) // delete
|| ((KeyCode > 47) && (KeyCode < 58)) // 0 - 9
);
}
// Gets the absolute pixel position of the supplied element
function GetTagPixels(StartTag, Direction) {
var PixelAmt = (Direction == 'LEFT') ? StartTag.offsetLeft : StartTag.offsetTop;
while ((StartTag.tagName != 'BODY') && (StartTag.tagName != 'HTML')) {
StartTag = StartTag.offsetParent;
PixelAmt += (Direction == 'LEFT') ? StartTag.offsetLeft : StartTag.offsetTop;
}
return PixelAmt;
}
// Is the specified select-list behind the calendar?
function BehindCal(SelectList, CalLeftX, CalRightX, CalTopY, CalBottomY, ListTopY) {
var ListLeftX = GetTagPixels(SelectList, 'LEFT');
var ListRightX = ListLeftX + SelectList.offsetWidth;
var ListBottomY = ListTopY + SelectList.offsetHeight;
return (((ListTopY < CalBottomY) && (ListBottomY > CalTopY)) && ((ListLeftX < CalRightX) && (ListRightX > CalLeftX)));
}
// For IE, hides any select-lists that are behind the calendar
function FixSelectLists(Over) {
if (navigator.appName == 'Microsoft Internet Explorer') {
var CalDiv = this.getCalendar();
var CalLeftX = CalDiv.offsetLeft;
var CalRightX = CalLeftX + CalDiv.offsetWidth;
var CalTopY = CalDiv.offsetTop;
var CalBottomY = CalTopY + (CellHeight * 9);
var FoundCalInput = false;
formLoop :
for (var j=this.formNumber;j<document.forms.length;j++) {
for (var i=0;i<document.forms[j].elements.length;i++) {
if (typeof document.forms[j].elements[i].type == 'string') {
if ((document.forms[j].elements[i].type == 'hidden') && (document.forms[j].elements[i].name == this.hiddenFieldName)) {
FoundCalInput = true;
i += 3; // 3 elements between the 1st hidden field and the last year input field
}
if (FoundCalInput) {
if (document.forms[j].elements[i].type.substr(0,6) == 'select') {
ListTopY = GetTagPixels(document.forms[j].elements[i], 'TOP');
if (ListTopY < CalBottomY) {
if (BehindCal(document.forms[j].elements[i], CalLeftX, CalRightX, CalTopY, CalBottomY, ListTopY)) {
document.forms[j].elements[i].style.visibility = (Over) ? 'hidden' : 'visible';
}
}
else break formLoop;
}
}
}
}
}
}
}
// Displays a message in the status bar when hovering over the calendar days
function DayCellHover(Cell, Over, Color, HoveredDay) {
Cell.style.backgroundColor = (Over) ? DayBGColor : Color;
if (Over) {
if ((this.yearValue == Today.getFullYear()) && (this.monthIndex == Today.getMonth()) && (HoveredDay == Today.getDate())) self.status = 'Click to select today';
else {
var Suffix = HoveredDay.toString();
switch (Suffix.substr(Suffix.length - 1, 1)) {
case '1' : Suffix += (HoveredDay == 11) ? 'th' : 'st'; break;
case '2' : Suffix += (HoveredDay == 12) ? 'th' : 'nd'; break;
case '3' : Suffix += (HoveredDay == 13) ? 'th' : 'rd'; break;
default : Suffix += 'th'; break;
}
self.status = 'Click to select ' + this.monthName + ' ' + Suffix;
}
}
else self.status = '';
return true;
}
// Sets the form elements after a day has been picked from the calendar
function PickDisplayDay(ClickedDay) {
this.show();
var MonthList = this.getMonthList();
var DayList = this.getDayList();
var YearField = this.getYearField();
FixDayList(DayList, GetDayCount(this.displayed.yearValue, this.displayed.monthIndex));
// Select the month and day in the lists
for (var i=0;i<MonthList.length;i++) {
if (MonthList.options[i].value == this.displayed.monthIndex) MonthList.options[i].selected = true;
}
for (var j=1;j<=DayList.length;j++) {
if (j == ClickedDay) DayList.options[j-1].selected = true;
}
this.setPicked(this.displayed.yearValue, this.displayed.monthIndex, ClickedDay);
// Change the year, if necessary
YearField.value = this.picked.yearPad;
YearField.defaultValue = YearField.value;
}
// Builds the HTML for the calendar days
function BuildCalendarDays() {
var Rows = 5;
if (((this.displayed.dayCount == 31) && (this.displayed.firstDay > 4)) || ((this.displayed.dayCount == 30) && (this.displayed.firstDay == 6))) Rows = 6;
else if ((this.displayed.dayCount == 28) && (this.displayed.firstDay == 0)) Rows = 4;
var HTML = '<table width="' + (CellWidth * 7) + '" cellspacing="0" cellpadding="1" style="cursor:default">';
for (var j=0;j<Rows;j++) {
HTML += '<tr>';
for (var i=1;i<=7;i++) {
Day = (j * 7) + (i - this.displayed.firstDay);
if ((Day >= 1) && (Day <= this.displayed.dayCount)) {
if ((this.displayed.yearValue == this.picked.yearValue) && (this.displayed.monthIndex == this.picked.monthIndex) && (Day == this.picked.day)) {
TextStyle = 'color:white;font-weight:bold;'
BackColor = DayBGColor;
}
else {
TextStyle = 'color:black;'
BackColor = CalBGColor;
}
if ((this.displayed.yearValue == Today.getFullYear()) && (this.displayed.monthIndex == Today.getMonth()) && (Day == Today.getDate())) TextStyle += 'border:1px solid darkred;padding:0px;';
HTML += '<td align="center" class="calendarDateInput" style="cursor:default;height:' + CellHeight + ';width:' + CellWidth + ';' + TextStyle + ';background-color:' + BackColor + '" onClick="' + this.objName + '.pickDay(' + Day + ')" onMouseOver="return ' + this.objName + '.displayed.dayHover(this,true,\'' + BackColor + '\',' + Day + ')" onMouseOut="return ' + this.objName + '.displayed.dayHover(this,false,\'' + BackColor + '\')">' + Day + '</td>';
}
else HTML += '<td class="calendarDateInput" style="height:' + CellHeight + '"> </td>';
}
HTML += '</tr>';
}
return HTML += '</table>';
}
// Determines which century to use (20th or 21st) when dealing with 2-digit years
function GetGoodYear(YearDigits) {
if (YearDigits.length == 4) return YearDigits;
else {
var Millennium = (YearDigits < Y2kPivotPoint) ? 2000 : 1900;
return Millennium + parseInt(YearDigits,10);
}
}
// Returns the number of days in a month (handles leap-years)
function GetDayCount(SomeYear, SomeMonth) {
return ((SomeMonth == 1) && ((SomeYear % 400 == 0) || ((SomeYear % 4 == 0) && (SomeYear % 100 != 0)))) ? 29 : MonthDays[SomeMonth];
}
// Highlights the buttons
function VirtualButton(Cell, ButtonDown) {
if (ButtonDown) {
Cell.style.borderLeft = 'buttonshadow 1px solid';
Cell.style.borderTop = 'buttonshadow 1px solid';
Cell.style.borderBottom = 'buttonhighlight 1px solid';
Cell.style.borderRight = 'buttonhighlight 1px solid';
}
else {
Cell.style.borderLeft = 'buttonhighlight 1px solid';
Cell.style.borderTop = 'buttonhighlight 1px solid';
Cell.style.borderBottom = 'buttonshadow 1px solid';
Cell.style.borderRight = 'buttonshadow 1px solid';
}
}
// Mouse-over for the previous/next month buttons
function NeighborHover(Cell, Over, DateObj) {
if (Over) {
VirtualButton(Cell, false);
self.status = 'Click to view ' + DateObj.fullName;
}
else {
Cell.style.border = 'buttonface 1px solid';
self.status = '';
}
return true;
}
// Adds/removes days from the day list, depending on the month/year
function FixDayList(DayList, NewDays) {
var DayPick = DayList.selectedIndex + 1;
if (NewDays != DayList.length) {
var OldSize = DayList.length;
for (var k=Math.min(NewDays,OldSize);k<Math.max(NewDays,OldSize);k++) {
(k >= NewDays) ? DayList.options[NewDays] = null : DayList.options[k] = new Option(k+1, k+1);
}
DayPick = Math.min(DayPick, NewDays);
DayList.options[DayPick-1].selected = true;
}
return DayPick;
}
// Resets the year to its previous valid value when something invalid is entered
function FixYearInput(YearField) {
var YearRE = new RegExp('\\d{' + YearField.defaultValue.length + '}');
if (!YearRE.test(YearField.value)) YearField.value = YearField.defaultValue;
}
// Displays a message in the status bar when hovering over the calendar icon
function CalIconHover(Over) {
var Message = (this.isShowing()) ? 'hide' : 'show';
self.status = (Over) ? 'Click to ' + Message + ' the calendar' : '';
return true;
}
// Starts the timer over from scratch
function CalTimerReset() {
eval('clearTimeout(' + this.timerID + ')');
eval(this.timerID + '=setTimeout(\'' + this.objName + '.show()\',' + (HideWait * 1000) + ')');
}
// The timer for the calendar
function DoTimer(CancelTimer) {
if (CancelTimer) eval('clearTimeout(' + this.timerID + ')');
else {
eval(this.timerID + '=null');
this.resetTimer();
}
}
// Show or hide the calendar
function ShowCalendar() {
if (this.isShowing()) {
var StopTimer = true;
this.getCalendar().style.zIndex = --ZCounter;
this.getCalendar().style.visibility = 'hidden';
this.fixSelects(false);
}
else {
var StopTimer = false;
this.fixSelects(true);
this.getCalendar().style.zIndex = ++ZCounter;
this.getCalendar().style.visibility = 'visible';
}
this.handleTimer(StopTimer);
self.status = '';
}
// Hides the input elements when the "blank" month is selected
function SetElementStatus(Hide) {
this.getDayList().style.visibility = (Hide) ? 'hidden' : 'visible';
this.getYearField().style.visibility = (Hide) ? 'hidden' : 'visible';
this.getCalendarLink().style.visibility = (Hide) ? 'hidden' : 'visible';
}
// Sets the date, based on the month selected
function CheckMonthChange(MonthList) {
var DayList = this.getDayList();
if (MonthList.options[MonthList.selectedIndex].value == '') {
DayList.selectedIndex = 0;
this.hideElements(true);
this.setHidden('');
}
else {
this.hideElements(false);
if (this.isShowing()) {
this.resetTimer(); // Gives the user more time to view the calendar with the newly-selected month
this.getCalendar().style.zIndex = ++ZCounter; // Make sure this calendar is on top of any other calendars
}
var DayPick = FixDayList(DayList, GetDayCount(this.picked.yearValue, MonthList.options[MonthList.selectedIndex].value));
this.setPicked(this.picked.yearValue, MonthList.options[MonthList.selectedIndex].value, DayPick);
}
}
// Sets the date, based on the day selected
function CheckDayChange(DayList) {
if (this.isShowing()) this.show();
this.setPicked(this.picked.yearValue, this.picked.monthIndex, DayList.selectedIndex+1);
}
// Changes the date when a valid year has been entered
function CheckYearInput(YearField) {
if ((YearField.value.length == YearField.defaultValue.length) && (YearField.defaultValue != YearField.value)) {
if (this.isShowing()) {
this.resetTimer(); // Gives the user more time to view the calendar with the newly-entered year
this.getCalendar().style.zIndex = ++ZCounter; // Make sure this calendar is on top of any other calendars
}
var NewYear = GetGoodYear(YearField.value);
var MonthList = this.getMonthList();
var NewDay = FixDayList(this.getDayList(), GetDayCount(NewYear, this.picked.monthIndex));
this.setPicked(NewYear, this.picked.monthIndex, NewDay);
YearField.defaultValue = YearField.value;
}
}
// Holds characteristics about a date
function dateObject() {
if (Function.call) { // Used when 'call' method of the Function object is supported
var ParentObject = this;
var ArgumentStart = 0;
}
else { // Used with 'call' method of the Function object is NOT supported
var ParentObject = arguments[0];
var ArgumentStart = 1;
}
ParentObject.date = (arguments.length == (ArgumentStart+1)) ? new Date(arguments[ArgumentStart+0]) : new Date(arguments[ArgumentStart+0], arguments[ArgumentStart+1], arguments[ArgumentStart+2]);
ParentObject.yearValue = ParentObject.date.getFullYear();
ParentObject.monthIndex = ParentObject.date.getMonth();
ParentObject.monthName = MonthNames[ParentObject.monthIndex];
ParentObject.fullName = ParentObject.monthName + ' ' + ParentObject.yearValue;
ParentObject.day = ParentObject.date.getDate();
ParentObject.dayCount = GetDayCount(ParentObject.yearValue, ParentObject.monthIndex);
var FirstDate = new Date(ParentObject.yearValue, ParentObject.monthIndex, 1);
ParentObject.firstDay = FirstDate.getDay();
}
// Keeps track of the date that goes into the hidden field
function storedMonthObject(DateFormat, DateYear, DateMonth, DateDay) {
(Function.call) ? dateObject.call(this, DateYear, DateMonth, DateDay) : dateObject(this, DateYear, DateMonth, DateDay);
this.yearPad = this.yearValue.toString();
this.monthPad = (this.monthIndex < 9) ? '0' + String(this.monthIndex + 1) : this.monthIndex + 1;
this.dayPad = (this.day < 10) ? '0' + this.day.toString() : this.day;
this.monthShort = this.monthName.substr(0,3).toUpperCase();
// Formats the year with 2 digits instead of 4
if (DateFormat.indexOf('YYYY') == -1) this.yearPad = this.yearPad.substr(2);
// Define the date-part delimiter
if (DateFormat.indexOf('/') >= 0) var Delimiter = '/';
else if (DateFormat.indexOf('-') >= 0) var Delimiter = '-';
else var Delimiter = '';
// Determine the order of the months and days
if (/DD?.?((MON)|(MM?M?))/.test(DateFormat)) {
this.formatted = this.dayPad + Delimiter;
this.formatted += (RegExp.$1.length == 3) ? this.monthShort : this.monthPad;
}
else if (/((MON)|(MM?M?))?.?DD?/.test(DateFormat)) {
this.formatted = (RegExp.$1.length == 3) ? this.monthShort : this.monthPad;
this.formatted += Delimiter + this.dayPad;
}
// Either prepend or append the year to the formatted date
this.formatted = (DateFormat.substr(0,2) == 'YY') ? this.yearPad + Delimiter + this.formatted : this.formatted + Delimiter + this.yearPad;
}
// Object for the current displayed month
function displayMonthObject(ParentObject, DateYear, DateMonth, DateDay) {
(Function.call) ? dateObject.call(this, DateYear, DateMonth, DateDay) : dateObject(this, DateYear, DateMonth, DateDay);
this.displayID = ParentObject.hiddenFieldName + '_Current_ID';
this.getDisplay = new Function('return document.getElementById(this.displayID)');
this.dayHover = DayCellHover;
this.goCurrent = new Function(ParentObject.objName + '.getCalendar().style.zIndex=++ZCounter;' + ParentObject.objName + '.setDisplayed(Today.getFullYear(),Today.getMonth());');
if (ParentObject.formNumber >= 0) this.getDisplay().innerHTML = this.fullName;
}
// Object for the previous/next buttons
function neighborMonthObject(ParentObject, IDText, DateMS) {
(Function.call) ? dateObject.call(this, DateMS) : dateObject(this, DateMS);
this.buttonID = ParentObject.hiddenFieldName + '_' + IDText + '_ID';
this.hover = new Function('C','O','NeighborHover(C,O,this)');
this.getButton = new Function('return document.getElementById(this.buttonID)');
this.go = new Function(ParentObject.objName + '.getCalendar().style.zIndex=++ZCounter;' + ParentObject.objName + '.setDisplayed(this.yearValue,this.monthIndex);');
if (ParentObject.formNumber >= 0) this.getButton().title = this.monthName;
}
// Sets the currently-displayed month object
function SetDisplayedMonth(DispYear, DispMonth) {
this.displayed = new displayMonthObject(this, DispYear, DispMonth, 1);
// Creates the previous and next month objects
this.previous = new neighborMonthObject(this, 'Previous', this.displayed.date.getTime() - 86400000);
this.next = new neighborMonthObject(this, 'Next', this.displayed.date.getTime() + (86400000 * (this.displayed.dayCount + 1)));
// Creates the HTML for the calendar
if (this.formNumber >= 0) this.getDayTable().innerHTML = this.buildCalendar();
}
// Sets the current selected date
function SetPickedMonth(PickedYear, PickedMonth, PickedDay) {
this.picked = new storedMonthObject(this.format, PickedYear, PickedMonth, PickedDay);
this.setHidden(this.picked.formatted);
this.setDisplayed(PickedYear, PickedMonth);
}
// The calendar object
function calendarObject(DateName, DateFormat, DefaultDate) {
/* Properties */
this.hiddenFieldName = DateName;
this.monthListID = DateName + '_Month_ID';
this.dayListID = DateName + '_Day_ID';
this.yearFieldID = DateName + '_Year_ID';
this.monthDisplayID = DateName + '_Current_ID';
this.calendarID = DateName + '_ID';
this.dayTableID = DateName + '_DayTable_ID';
this.calendarLinkID = this.calendarID + '_Link';
this.timerID = this.calendarID + '_Timer';
this.objName = DateName + '_Object';
this.format = DateFormat;
this.formNumber = -1;
this.picked = null;
this.displayed = null;
this.previous = null;
this.next = null;
/* Methods */
this.setPicked = SetPickedMonth;
this.setDisplayed = SetDisplayedMonth;
this.checkYear = CheckYearInput;
this.fixYear = FixYearInput;
this.changeMonth = CheckMonthChange;
this.changeDay = CheckDayChange;
this.resetTimer = CalTimerReset;
this.hideElements = SetElementStatus;
this.show = ShowCalendar;
this.handleTimer = DoTimer;
this.iconHover = CalIconHover;
this.buildCalendar = BuildCalendarDays;
this.pickDay = PickDisplayDay;
this.fixSelects = FixSelectLists;
this.setHidden = new Function('D','if (this.formNumber >= 0) this.getHiddenField().value=D');
// Returns a reference to these elements
this.getHiddenField = new Function('return document.forms[this.formNumber].elements[this.hiddenFieldName]');
this.getMonthList = new Function('return document.getElementById(this.monthListID)');
this.getDayList = new Function('return document.getElementById(this.dayListID)');
this.getYearField = new Function('return document.getElementById(this.yearFieldID)');
this.getCalendar = new Function('return document.getElementById(this.calendarID)');
this.getDayTable = new Function('return document.getElementById(this.dayTableID)');
this.getCalendarLink = new Function('return document.getElementById(this.calendarLinkID)');
this.getMonthDisplay = new Function('return document.getElementById(this.monthDisplayID)');
this.isShowing = new Function('return !(this.getCalendar().style.visibility != \'visible\')');
/* Constructor */
// Functions used only by the constructor
function getMonthIndex(MonthAbbr) { // Returns the index (0-11) of the supplied month abbreviation
for (var MonPos=0;MonPos<MonthNames.length;MonPos++) {
if (MonthNames[MonPos].substr(0,3).toUpperCase() == MonthAbbr.toUpperCase()) break;
}
return MonPos;
}
function SetGoodDate(CalObj, Notify) { // Notifies the user about their bad default date, and sets the current system date
CalObj.setPicked(Today.getFullYear(), Today.getMonth(), Today.getDate());
if (Notify) alert('WARNING: The supplied date is not in valid \'' + DateFormat + '\' format: ' + DefaultDate + '.\nTherefore, the current system date will be used instead: ' + CalObj.picked.formatted);
}
// Main part of the constructor
if (DefaultDate != '') {
if ((this.format == 'YYYYMMDD') && (/^(\d{4})(\d{2})(\d{2})$/.test(DefaultDate))) this.setPicked(RegExp.$1, parseInt(RegExp.$2,10)-1, RegExp.$3);
else {
// Get the year
if ((this.format.substr(0,2) == 'YY') && (/^(\d{2,4})(-|\/)/.test(DefaultDate))) { // Year is at the beginning
var YearPart = GetGoodYear(RegExp.$1);
// Determine the order of the months and days
if (/(-|\/)(\w{1,3})(-|\/)(\w{1,3})$/.test(DefaultDate)) {
var MidPart = RegExp.$2;
var EndPart = RegExp.$4;
if (/D$/.test(this.format)) { // Ends with days
var DayPart = EndPart;
var MonthPart = MidPart;
}
else {
var DayPart = MidPart;
var MonthPart = EndPart;
}
MonthPart = (/\d{1,2}/i.test(MonthPart)) ? parseInt(MonthPart,10)-1 : getMonthIndex(MonthPart);
this.setPicked(YearPart, MonthPart, DayPart);
}
else SetGoodDate(this, true);
}
else if (/(-|\/)(\d{2,4})$/.test(DefaultDate)) { // Year is at the end
var YearPart = GetGoodYear(RegExp.$2);
// Determine the order of the months and days
if (/^(\w{1,3})(-|\/)(\w{1,3})(-|\/)/.test(DefaultDate)) {
if (this.format.substr(0,1) == 'D') { // Starts with days
var DayPart = RegExp.$1;
var MonthPart = RegExp.$3;
}
else { // Starts with months
var MonthPart = RegExp.$1;
var DayPart = RegExp.$3;
}
MonthPart = (/\d{1,2}/i.test(MonthPart)) ? parseInt(MonthPart,10)-1 : getMonthIndex(MonthPart);
this.setPicked(YearPart, MonthPart, DayPart);
}
else SetGoodDate(this, true);
}
else SetGoodDate(this, true);
}
}
}
// Main function that creates the form elements
function DateInput(DateName, Required, DateFormat, DefaultDate) {
if (arguments.length == 0) document.writeln('<span style="color:red;font-size:' + FontSize + 'px;font-family:' + FontFamily + ';">ERROR: Missing required parameter in call to \'DateInput\': [name of hidden date field].</span>');
else {
// Handle DateFormat
if (arguments.length < 3) { // The format wasn't passed in, so use default
DateFormat = DefaultDateFormat;
if (arguments.length < 2) Required = false;
}
else if (/^(Y{2,4}(-|\/)?)?((MON)|(MM?M?)|(DD?))(-|\/)?((MON)|(MM?M?)|(DD?))((-|\/)Y{2,4})?$/i.test(DateFormat)) DateFormat = DateFormat.toUpperCase();
else { // Passed-in DateFormat was invalid, use default format instead
var AlertMessage = 'WARNING: The supplied date format for the \'' + DateName + '\' field is not valid: ' + DateFormat + '\nTherefore, the default date format will be used instead: ' + DefaultDateFormat;
DateFormat = DefaultDateFormat;
if (arguments.length == 4) { // DefaultDate was passed in with an invalid date format
var CurrentDate = new storedMonthObject(DateFormat, Today.getFullYear(), Today.getMonth(), Today.getDate());
AlertMessage += '\n\nThe supplied date (' + DefaultDate + ') cannot be interpreted with the invalid format.\nTherefore, the current system date will be used instead: ' + CurrentDate.formatted;
DefaultDate = CurrentDate.formatted;
}
alert(AlertMessage);
}
// Define the current date if it wasn't set already
if (!CurrentDate) var CurrentDate = new storedMonthObject(DateFormat, Today.getFullYear(), Today.getMonth(), Today.getDate());
// Handle DefaultDate
if (arguments.length < 4) { // The date wasn't passed in
DefaultDate = (Required) ? CurrentDate.formatted : ''; // If required, use today's date
}
// Creates the calendar object!
eval(DateName + '_Object=new calendarObject(\'' + DateName + '\',\'' + DateFormat + '\',\'' + DefaultDate + '\')');
// Determine initial viewable state of day, year, and calendar icon
if ((Required) || (arguments.length == 4)) {
var InitialStatus = '';
var InitialDate = eval(DateName + '_Object.picked.formatted');
}
else {
var InitialStatus = ' style="visibility:hidden"';
var InitialDate = '';
eval(DateName + '_Object.setPicked(' + Today.getFullYear() + ',' + Today.getMonth() + ',' + Today.getDate() + ')');
}
// Create the form elements
with (document) {
writeln('<input type="hidden" name="' + DateName + '" value="' + InitialDate + '">');
// Find this form number
for (var f=0;f<forms.length;f++) {
for (var e=0;e<forms[f].elements.length;e++) {
if (typeof forms[f].elements[e].type == 'string') {
if ((forms[f].elements[e].type == 'hidden') && (forms[f].elements[e].name == DateName)) {
eval(DateName + '_Object.formNumber='+f);
break;
}
}
}
}
writeln('<table cellpadding="0" cellspacing="2"><tr>' + String.fromCharCode(13) + '<td valign="middle">');
writeln('<select class="calendarDateInput" id="' + DateName + '_Month_ID" onChange="' + DateName + '_Object.changeMonth(this)" name=ringmonth>');
if (!Required) {
var NoneSelected = (DefaultDate == '') ? ' selected' : '';
writeln('<option value=""' + NoneSelected + '>' + UnselectedMonthText + '</option>');
}
for (var i=0;i<12;i++) {
MonthSelected = ((DefaultDate != '') && (eval(DateName + '_Object.picked.monthIndex') == i)) ? ' selected' : '';
writeln('<option value="' + i + '"' + MonthSelected + '>' + MonthNames[i]+ '</option>');
}
writeln('</select>' + String.fromCharCode(13) + '</td>' + String.fromCharCode(13) + '<td valign="middle">');
writeln('<select' + InitialStatus + ' class="calendarDateInput" id="' + DateName + '_Day_ID" onChange="' + DateName + '_Object.changeDay(this)" name=ringday>');
for (var j=1;j<=eval(DateName + '_Object.picked.dayCount');j++) {
DaySelected = ((DefaultDate != '') && (eval(DateName + '_Object.picked.day') == j)) ? ' selected' : '';
writeln('<option' + DaySelected + '>' + j + '</option>');
}
writeln('</select>' + String.fromCharCode(13) + '</td>' + String.fromCharCode(13) + '<td valign="middle">');
writeln('<input name=ringyear ' + InitialStatus + ' class="calendarDateInput" type="text" id="' + DateName + '_Year_ID" size="' + eval(DateName + '_Object.picked.yearPad.length') + '" maxlength="' + eval(DateName + '_Object.picked.yearPad.length') + '" title="Year" value="' + eval(DateName + '_Object.picked.yearPad') + '" onKeyPress="return YearDigitsOnly(window.event)" onKeyUp="' + DateName + '_Object.checkYear(this)" onBlur="' + DateName + '_Object.fixYear(this)">');
write('<td valign="middle">' + String.fromCharCode(13) + '<a' + InitialStatus + ' id="' + DateName + '_ID_Link" href="javascript:' + DateName + '_Object.show()" onMouseOver="return ' + DateName + '_Object.iconHover(true)" onMouseOut="return ' + DateName + '_Object.iconHover(false)">选择日期</a> ');
writeln('<span id="' + DateName + '_ID" style="position:absolute;visibility:hidden;width:' + (CellWidth * 7) + 'px;background-color:' + CalBGColor + ';border:1px solid dimgray;" onMouseOver="' + DateName + '_Object.handleTimer(true)" onMouseOut="' + DateName + '_Object.handleTimer(false)">');
writeln('<table width="' + (CellWidth * 7) + '" cellspacing="0" cellpadding="1">' + String.fromCharCode(13) + '<tr style="background-color:' + TopRowBGColor + ';">');
writeln('<td id="' + DateName + '_Previous_ID" style="cursor:default" align="center" class="calendarDateInput" style="height:' + CellHeight + '" onClick="' + DateName + '_Object.previous.go()" onMouseDown="VirtualButton(this,true)" onMouseUp="VirtualButton(this,false)" onMouseOver="return ' + DateName + '_Object.previous.hover(this,true)" onMouseOut="return ' + DateName + '_Object.previous.hover(this,false)" title="' + eval(DateName + '_Object.previous.monthName') + '"> << </td>');
writeln('<td id="' + DateName + '_Current_ID" style="cursor:pointer" align="center" class="calendarDateInput" style="height:' + CellHeight + '" colspan="5" onClick="' + DateName + '_Object.displayed.goCurrent()" onMouseOver="self.status=\'Click to view ' + CurrentDate.fullName + '\';return true;" onMouseOut="self.status=\'\';return true;" title="Show Current Month">' + eval(DateName + '_Object.displayed.fullName') + '</td>');
writeln('<td id="' + DateName + '_Next_ID" style="cursor:default" align="center" class="calendarDateInput" style="height:' + CellHeight + '" onClick="' + DateName + '_Object.next.go()" onMouseDown="VirtualButton(this,true)" onMouseUp="VirtualButton(this,false)" onMouseOver="return ' + DateName + '_Object.next.hover(this,true)" onMouseOut="return ' + DateName + '_Object.next.hover(this,false)" title="' + eval(DateName + '_Object.next.monthName') + '"> >></td></tr>' + String.fromCharCode(13) + '<tr>');
for (var w=0;w<7;w++) writeln('<td width="' + CellWidth + '" align="center" class="calendarDateInput" style="height:' + CellHeight + ';width:' + CellWidth + ';font-weight:bold;border-top:1px solid dimgray;border-bottom:1px solid dimgray;">' + WeekDays[w] + '</td>');
writeln('</tr>' + String.fromCharCode(13) + '</table>' + String.fromCharCode(13) + '<span id="' + DateName + '_DayTable_ID">' + eval(DateName + '_Object.buildCalendar()') + '</span>' + String.fromCharCode(13) + '</span>' + String.fromCharCode(13) + '</td>' + String.fromCharCode(13) + '</tr>' + String.fromCharCode(13) + '</table>');
}
}
}
<script>DateInput('orderdate', true, 'DD-MON-YYYY')</script>
// Customizable variables
var DefaultDateFormat = 'MM/DD/YYYY'; // If no date format is supplied, this will be used instead
var HideWait = 3; // Number of seconds before the calendar will disappear
var Y2kPivotPoint = 76; // 2-digit years before this point will be created in the 21st century
var UnselectedMonthText = ''; // Text to display in the 1st month list item when the date isn't required
var FontSize = 11; // In pixels
var FontFamily = 'Tahoma';
var CellWidth = 18;
var CellHeight = 16;
var ImageURL = 'calendar.jpg';
var NextURL = 'next.gif';
var PrevURL = 'prev.gif';
var CalBGColor = 'white';
var TopRowBGColor = 'buttonface';
var DayBGColor = 'lightgrey';
// Global variables
var ZCounter = 100;
var Today = new Date();
var WeekDays = new Array('S','M','T','W','T','F','S');
var MonthDays = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
var MonthNames = new Array('January',
'February',
'March','April','May','June','July','August','September','October','November','December');
// Write out the stylesheet definition for the calendar
with (document) {
writeln('<style>');
writeln('td.calendarDateInput {letter-spacing:normal;line-height:normal;font-family:' + FontFamily + ',Sans-Serif;font-size:' + FontSize + 'px;}');
writeln('select.calendarDateInput {letter-spacing:.06em;font-family:Verdana,Sans-Serif;font-size:11px;}');
writeln('input.calendarDateInput {letter-spacing:.06em;font-family:Verdana,Sans-Serif;font-size:11px;}');
writeln('</style>');
}
// Only allows certain keys to be used in the date field
function YearDigitsOnly(e) {
var KeyCode = (e.keyCode) ? e.keyCode : e.which;
return ((KeyCode == 8) // backspace
|| (KeyCode == 9) // tab
|| (KeyCode == 37) // left arrow
|| (KeyCode == 39) // right arrow
|| (KeyCode == 46) // delete
|| ((KeyCode > 47) && (KeyCode < 58)) // 0 - 9
);
}
// Gets the absolute pixel position of the supplied element
function GetTagPixels(StartTag, Direction) {
var PixelAmt = (Direction == 'LEFT') ? StartTag.offsetLeft : StartTag.offsetTop;
while ((StartTag.tagName != 'BODY') && (StartTag.tagName != 'HTML')) {
StartTag = StartTag.offsetParent;
PixelAmt += (Direction == 'LEFT') ? StartTag.offsetLeft : StartTag.offsetTop;
}
return PixelAmt;
}
// Is the specified select-list behind the calendar?
function BehindCal(SelectList, CalLeftX, CalRightX, CalTopY, CalBottomY, ListTopY) {
var ListLeftX = GetTagPixels(SelectList, 'LEFT');
var ListRightX = ListLeftX + SelectList.offsetWidth;
var ListBottomY = ListTopY + SelectList.offsetHeight;
return (((ListTopY < CalBottomY) && (ListBottomY > CalTopY)) && ((ListLeftX < CalRightX) && (ListRightX > CalLeftX)));
}
// For IE, hides any select-lists that are behind the calendar
function FixSelectLists(Over) {
if (navigator.appName == 'Microsoft Internet Explorer') {
var CalDiv = this.getCalendar();
var CalLeftX = CalDiv.offsetLeft;
var CalRightX = CalLeftX + CalDiv.offsetWidth;
var CalTopY = CalDiv.offsetTop;
var CalBottomY = CalTopY + (CellHeight * 9);
var FoundCalInput = false;
formLoop :
for (var j=this.formNumber;j<document.forms.length;j++) {
for (var i=0;i<document.forms[j].elements.length;i++) {
if (typeof document.forms[j].elements[i].type == 'string') {
if ((document.forms[j].elements[i].type == 'hidden') && (document.forms[j].elements[i].name == this.hiddenFieldName)) {
FoundCalInput = true;
i += 3; // 3 elements between the 1st hidden field and the last year input field
}
if (FoundCalInput) {
if (document.forms[j].elements[i].type.substr(0,6) == 'select') {
ListTopY = GetTagPixels(document.forms[j].elements[i], 'TOP');
if (ListTopY < CalBottomY) {
if (BehindCal(document.forms[j].elements[i], CalLeftX, CalRightX, CalTopY, CalBottomY, ListTopY)) {
document.forms[j].elements[i].style.visibility = (Over) ? 'hidden' : 'visible';
}
}
else break formLoop;
}
}
}
}
}
}
}
// Displays a message in the status bar when hovering over the calendar days
function DayCellHover(Cell, Over, Color, HoveredDay) {
Cell.style.backgroundColor = (Over) ? DayBGColor : Color;
if (Over) {
if ((this.yearValue == Today.getFullYear()) && (this.monthIndex == Today.getMonth()) && (HoveredDay == Today.getDate())) self.status = 'Click to select today';
else {
var Suffix = HoveredDay.toString();
switch (Suffix.substr(Suffix.length - 1, 1)) {
case '1' : Suffix += (HoveredDay == 11) ? 'th' : 'st'; break;
case '2' : Suffix += (HoveredDay == 12) ? 'th' : 'nd'; break;
case '3' : Suffix += (HoveredDay == 13) ? 'th' : 'rd'; break;
default : Suffix += 'th'; break;
}
self.status = 'Click to select ' + this.monthName + ' ' + Suffix;
}
}
else self.status = '';
return true;
}
// Sets the form elements after a day has been picked from the calendar
function PickDisplayDay(ClickedDay) {
this.show();
var MonthList = this.getMonthList();
var DayList = this.getDayList();
var YearField = this.getYearField();
FixDayList(DayList, GetDayCount(this.displayed.yearValue, this.displayed.monthIndex));
// Select the month and day in the lists
for (var i=0;i<MonthList.length;i++) {
if (MonthList.options[i].value == this.displayed.monthIndex) MonthList.options[i].selected = true;
}
for (var j=1;j<=DayList.length;j++) {
if (j == ClickedDay) DayList.options[j-1].selected = true;
}
this.setPicked(this.displayed.yearValue, this.displayed.monthIndex, ClickedDay);
// Change the year, if necessary
YearField.value = this.picked.yearPad;
YearField.defaultValue = YearField.value;
}
// Builds the HTML for the calendar days
function BuildCalendarDays() {
var Rows = 5;
if (((this.displayed.dayCount == 31) && (this.displayed.firstDay > 4)) || ((this.displayed.dayCount == 30) && (this.displayed.firstDay == 6))) Rows = 6;
else if ((this.displayed.dayCount == 28) && (this.displayed.firstDay == 0)) Rows = 4;
var HTML = '<table width="' + (CellWidth * 7) + '" cellspacing="0" cellpadding="1" style="cursor:default">';
for (var j=0;j<Rows;j++) {
HTML += '<tr>';
for (var i=1;i<=7;i++) {
Day = (j * 7) + (i - this.displayed.firstDay);
if ((Day >= 1) && (Day <= this.displayed.dayCount)) {
if ((this.displayed.yearValue == this.picked.yearValue) && (this.displayed.monthIndex == this.picked.monthIndex) && (Day == this.picked.day)) {
TextStyle = 'color:white;font-weight:bold;'
BackColor = DayBGColor;
}
else {
TextStyle = 'color:black;'
BackColor = CalBGColor;
}
if ((this.displayed.yearValue == Today.getFullYear()) && (this.displayed.monthIndex == Today.getMonth()) && (Day == Today.getDate())) TextStyle += 'border:1px solid darkred;padding:0px;';
HTML += '<td align="center" class="calendarDateInput" style="cursor:default;height:' + CellHeight + ';width:' + CellWidth + ';' + TextStyle + ';background-color:' + BackColor + '" onClick="' + this.objName + '.pickDay(' + Day + ')" onMouseOver="return ' + this.objName + '.displayed.dayHover(this,true,\'' + BackColor + '\',' + Day + ')" onMouseOut="return ' + this.objName + '.displayed.dayHover(this,false,\'' + BackColor + '\')">' + Day + '</td>';
}
else HTML += '<td class="calendarDateInput" style="height:' + CellHeight + '"> </td>';
}
HTML += '</tr>';
}
return HTML += '</table>';
}
// Determines which century to use (20th or 21st) when dealing with 2-digit years
function GetGoodYear(YearDigits) {
if (YearDigits.length == 4) return YearDigits;
else {
var Millennium = (YearDigits < Y2kPivotPoint) ? 2000 : 1900;
return Millennium + parseInt(YearDigits,10);
}
}
// Returns the number of days in a month (handles leap-years)
function GetDayCount(SomeYear, SomeMonth) {
return ((SomeMonth == 1) && ((SomeYear % 400 == 0) || ((SomeYear % 4 == 0) && (SomeYear % 100 != 0)))) ? 29 : MonthDays[SomeMonth];
}
// Highlights the buttons
function VirtualButton(Cell, ButtonDown) {
if (ButtonDown) {
Cell.style.borderLeft = 'buttonshadow 1px solid';
Cell.style.borderTop = 'buttonshadow 1px solid';
Cell.style.borderBottom = 'buttonhighlight 1px solid';
Cell.style.borderRight = 'buttonhighlight 1px solid';
}
else {
Cell.style.borderLeft = 'buttonhighlight 1px solid';
Cell.style.borderTop = 'buttonhighlight 1px solid';
Cell.style.borderBottom = 'buttonshadow 1px solid';
Cell.style.borderRight = 'buttonshadow 1px solid';
}
}
// Mouse-over for the previous/next month buttons
function NeighborHover(Cell, Over, DateObj) {
if (Over) {
VirtualButton(Cell, false);
self.status = 'Click to view ' + DateObj.fullName;
}
else {
Cell.style.border = 'buttonface 1px solid';
self.status = '';
}
return true;
}
// Adds/removes days from the day list, depending on the month/year
function FixDayList(DayList, NewDays) {
var DayPick = DayList.selectedIndex + 1;
if (NewDays != DayList.length) {
var OldSize = DayList.length;
for (var k=Math.min(NewDays,OldSize);k<Math.max(NewDays,OldSize);k++) {
(k >= NewDays) ? DayList.options[NewDays] = null : DayList.options[k] = new Option(k+1, k+1);
}
DayPick = Math.min(DayPick, NewDays);
DayList.options[DayPick-1].selected = true;
}
return DayPick;
}
// Resets the year to its previous valid value when something invalid is entered
function FixYearInput(YearField) {
var YearRE = new RegExp('\\d{' + YearField.defaultValue.length + '}');
if (!YearRE.test(YearField.value)) YearField.value = YearField.defaultValue;
}
// Displays a message in the status bar when hovering over the calendar icon
function CalIconHover(Over) {
var Message = (this.isShowing()) ? 'hide' : 'show';
self.status = (Over) ? 'Click to ' + Message + ' the calendar' : '';
return true;
}
// Starts the timer over from scratch
function CalTimerReset() {
eval('clearTimeout(' + this.timerID + ')');
eval(this.timerID + '=setTimeout(\'' + this.objName + '.show()\',' + (HideWait * 1000) + ')');
}
// The timer for the calendar
function DoTimer(CancelTimer) {
if (CancelTimer) eval('clearTimeout(' + this.timerID + ')');
else {
eval(this.timerID + '=null');
this.resetTimer();
}
}
// Show or hide the calendar
function ShowCalendar() {
if (this.isShowing()) {
var StopTimer = true;
this.getCalendar().style.zIndex = --ZCounter;
this.getCalendar().style.visibility = 'hidden';
this.fixSelects(false);
}
else {
var StopTimer = false;
this.fixSelects(true);
this.getCalendar().style.zIndex = ++ZCounter;
this.getCalendar().style.visibility = 'visible';
}
this.handleTimer(StopTimer);
self.status = '';
}
// Hides the input elements when the "blank" month is selected
function SetElementStatus(Hide) {
this.getDayList().style.visibility = (Hide) ? 'hidden' : 'visible';
this.getYearField().style.visibility = (Hide) ? 'hidden' : 'visible';
this.getCalendarLink().style.visibility = (Hide) ? 'hidden' : 'visible';
}
// Sets the date, based on the month selected
function CheckMonthChange(MonthList) {
var DayList = this.getDayList();
if (MonthList.options[MonthList.selectedIndex].value == '') {
DayList.selectedIndex = 0;
this.hideElements(true);
this.setHidden('');
}
else {
this.hideElements(false);
if (this.isShowing()) {
this.resetTimer(); // Gives the user more time to view the calendar with the newly-selected month
this.getCalendar().style.zIndex = ++ZCounter; // Make sure this calendar is on top of any other calendars
}
var DayPick = FixDayList(DayList, GetDayCount(this.picked.yearValue, MonthList.options[MonthList.selectedIndex].value));
this.setPicked(this.picked.yearValue, MonthList.options[MonthList.selectedIndex].value, DayPick);
}
}
// Sets the date, based on the day selected
function CheckDayChange(DayList) {
if (this.isShowing()) this.show();
this.setPicked(this.picked.yearValue, this.picked.monthIndex, DayList.selectedIndex+1);
}
// Changes the date when a valid year has been entered
function CheckYearInput(YearField) {
if ((YearField.value.length == YearField.defaultValue.length) && (YearField.defaultValue != YearField.value)) {
if (this.isShowing()) {
this.resetTimer(); // Gives the user more time to view the calendar with the newly-entered year
this.getCalendar().style.zIndex = ++ZCounter; // Make sure this calendar is on top of any other calendars
}
var NewYear = GetGoodYear(YearField.value);
var MonthList = this.getMonthList();
var NewDay = FixDayList(this.getDayList(), GetDayCount(NewYear, this.picked.monthIndex));
this.setPicked(NewYear, this.picked.monthIndex, NewDay);
YearField.defaultValue = YearField.value;
}
}
// Holds characteristics about a date
function dateObject() {
if (Function.call) { // Used when 'call' method of the Function object is supported
var ParentObject = this;
var ArgumentStart = 0;
}
else { // Used with 'call' method of the Function object is NOT supported
var ParentObject = arguments[0];
var ArgumentStart = 1;
}
ParentObject.date = (arguments.length == (ArgumentStart+1)) ? new Date(arguments[ArgumentStart+0]) : new Date(arguments[ArgumentStart+0], arguments[ArgumentStart+1], arguments[ArgumentStart+2]);
ParentObject.yearValue = ParentObject.date.getFullYear();
ParentObject.monthIndex = ParentObject.date.getMonth();
ParentObject.monthName = MonthNames[ParentObject.monthIndex];
ParentObject.fullName = ParentObject.monthName + ' ' + ParentObject.yearValue;
ParentObject.day = ParentObject.date.getDate();
ParentObject.dayCount = GetDayCount(ParentObject.yearValue, ParentObject.monthIndex);
var FirstDate = new Date(ParentObject.yearValue, ParentObject.monthIndex, 1);
ParentObject.firstDay = FirstDate.getDay();
}
// Keeps track of the date that goes into the hidden field
function storedMonthObject(DateFormat, DateYear, DateMonth, DateDay) {
(Function.call) ? dateObject.call(this, DateYear, DateMonth, DateDay) : dateObject(this, DateYear, DateMonth, DateDay);
this.yearPad = this.yearValue.toString();
this.monthPad = (this.monthIndex < 9) ? '0' + String(this.monthIndex + 1) : this.monthIndex + 1;
this.dayPad = (this.day < 10) ? '0' + this.day.toString() : this.day;
this.monthShort = this.monthName.substr(0,3).toUpperCase();
// Formats the year with 2 digits instead of 4
if (DateFormat.indexOf('YYYY') == -1) this.yearPad = this.yearPad.substr(2);
// Define the date-part delimiter
if (DateFormat.indexOf('/') >= 0) var Delimiter = '/';
else if (DateFormat.indexOf('-') >= 0) var Delimiter = '-';
else var Delimiter = '';
// Determine the order of the months and days
if (/DD?.?((MON)|(MM?M?))/.test(DateFormat)) {
this.formatted = this.dayPad + Delimiter;
this.formatted += (RegExp.$1.length == 3) ? this.monthShort : this.monthPad;
}
else if (/((MON)|(MM?M?))?.?DD?/.test(DateFormat)) {
this.formatted = (RegExp.$1.length == 3) ? this.monthShort : this.monthPad;
this.formatted += Delimiter + this.dayPad;
}
// Either prepend or append the year to the formatted date
this.formatted = (DateFormat.substr(0,2) == 'YY') ? this.yearPad + Delimiter + this.formatted : this.formatted + Delimiter + this.yearPad;
}
// Object for the current displayed month
function displayMonthObject(ParentObject, DateYear, DateMonth, DateDay) {
(Function.call) ? dateObject.call(this, DateYear, DateMonth, DateDay) : dateObject(this, DateYear, DateMonth, DateDay);
this.displayID = ParentObject.hiddenFieldName + '_Current_ID';
this.getDisplay = new Function('return document.getElementById(this.displayID)');
this.dayHover = DayCellHover;
this.goCurrent = new Function(ParentObject.objName + '.getCalendar().style.zIndex=++ZCounter;' + ParentObject.objName + '.setDisplayed(Today.getFullYear(),Today.getMonth());');
if (ParentObject.formNumber >= 0) this.getDisplay().innerHTML = this.fullName;
}
// Object for the previous/next buttons
function neighborMonthObject(ParentObject, IDText, DateMS) {
(Function.call) ? dateObject.call(this, DateMS) : dateObject(this, DateMS);
this.buttonID = ParentObject.hiddenFieldName + '_' + IDText + '_ID';
this.hover = new Function('C','O','NeighborHover(C,O,this)');
this.getButton = new Function('return document.getElementById(this.buttonID)');
this.go = new Function(ParentObject.objName + '.getCalendar().style.zIndex=++ZCounter;' + ParentObject.objName + '.setDisplayed(this.yearValue,this.monthIndex);');
if (ParentObject.formNumber >= 0) this.getButton().title = this.monthName;
}
// Sets the currently-displayed month object
function SetDisplayedMonth(DispYear, DispMonth) {
this.displayed = new displayMonthObject(this, DispYear, DispMonth, 1);
// Creates the previous and next month objects
this.previous = new neighborMonthObject(this, 'Previous', this.displayed.date.getTime() - 86400000);
this.next = new neighborMonthObject(this, 'Next', this.displayed.date.getTime() + (86400000 * (this.displayed.dayCount + 1)));
// Creates the HTML for the calendar
if (this.formNumber >= 0) this.getDayTable().innerHTML = this.buildCalendar();
}
// Sets the current selected date
function SetPickedMonth(PickedYear, PickedMonth, PickedDay) {
this.picked = new storedMonthObject(this.format, PickedYear, PickedMonth, PickedDay);
this.setHidden(this.picked.formatted);
this.setDisplayed(PickedYear, PickedMonth);
}
// The calendar object
function calendarObject(DateName, DateFormat, DefaultDate) {
/* Properties */
this.hiddenFieldName = DateName;
this.monthListID = DateName + '_Month_ID';
this.dayListID = DateName + '_Day_ID';
this.yearFieldID = DateName + '_Year_ID';
this.monthDisplayID = DateName + '_Current_ID';
this.calendarID = DateName + '_ID';
this.dayTableID = DateName + '_DayTable_ID';
this.calendarLinkID = this.calendarID + '_Link';
this.timerID = this.calendarID + '_Timer';
this.objName = DateName + '_Object';
this.format = DateFormat;
this.formNumber = -1;
this.picked = null;
this.displayed = null;
this.previous = null;
this.next = null;
/* Methods */
this.setPicked = SetPickedMonth;
this.setDisplayed = SetDisplayedMonth;
this.checkYear = CheckYearInput;
this.fixYear = FixYearInput;
this.changeMonth = CheckMonthChange;
this.changeDay = CheckDayChange;
this.resetTimer = CalTimerReset;
this.hideElements = SetElementStatus;
this.show = ShowCalendar;
this.handleTimer = DoTimer;
this.iconHover = CalIconHover;
this.buildCalendar = BuildCalendarDays;
this.pickDay = PickDisplayDay;
this.fixSelects = FixSelectLists;
this.setHidden = new Function('D','if (this.formNumber >= 0) this.getHiddenField().value=D');
// Returns a reference to these elements
this.getHiddenField = new Function('return document.forms[this.formNumber].elements[this.hiddenFieldName]');
this.getMonthList = new Function('return document.getElementById(this.monthListID)');
this.getDayList = new Function('return document.getElementById(this.dayListID)');
this.getYearField = new Function('return document.getElementById(this.yearFieldID)');
this.getCalendar = new Function('return document.getElementById(this.calendarID)');
this.getDayTable = new Function('return document.getElementById(this.dayTableID)');
this.getCalendarLink = new Function('return document.getElementById(this.calendarLinkID)');
this.getMonthDisplay = new Function('return document.getElementById(this.monthDisplayID)');
this.isShowing = new Function('return !(this.getCalendar().style.visibility != \'visible\')');
/* Constructor */
// Functions used only by the constructor
function getMonthIndex(MonthAbbr) { // Returns the index (0-11) of the supplied month abbreviation
for (var MonPos=0;MonPos<MonthNames.length;MonPos++) {
if (MonthNames[MonPos].substr(0,3).toUpperCase() == MonthAbbr.toUpperCase()) break;
}
return MonPos;
}
function SetGoodDate(CalObj, Notify) { // Notifies the user about their bad default date, and sets the current system date
CalObj.setPicked(Today.getFullYear(), Today.getMonth(), Today.getDate());
if (Notify) alert('WARNING: The supplied date is not in valid \'' + DateFormat + '\' format: ' + DefaultDate + '.\nTherefore, the current system date will be used instead: ' + CalObj.picked.formatted);
}
// Main part of the constructor
if (DefaultDate != '') {
if ((this.format == 'YYYYMMDD') && (/^(\d{4})(\d{2})(\d{2})$/.test(DefaultDate))) this.setPicked(RegExp.$1, parseInt(RegExp.$2,10)-1, RegExp.$3);
else {
// Get the year
if ((this.format.substr(0,2) == 'YY') && (/^(\d{2,4})(-|\/)/.test(DefaultDate))) { // Year is at the beginning
var YearPart = GetGoodYear(RegExp.$1);
// Determine the order of the months and days
if (/(-|\/)(\w{1,3})(-|\/)(\w{1,3})$/.test(DefaultDate)) {
var MidPart = RegExp.$2;
var EndPart = RegExp.$4;
if (/D$/.test(this.format)) { // Ends with days
var DayPart = EndPart;
var MonthPart = MidPart;
}
else {
var DayPart = MidPart;
var MonthPart = EndPart;
}
MonthPart = (/\d{1,2}/i.test(MonthPart)) ? parseInt(MonthPart,10)-1 : getMonthIndex(MonthPart);
this.setPicked(YearPart, MonthPart, DayPart);
}
else SetGoodDate(this, true);
}
else if (/(-|\/)(\d{2,4})$/.test(DefaultDate)) { // Year is at the end
var YearPart = GetGoodYear(RegExp.$2);
// Determine the order of the months and days
if (/^(\w{1,3})(-|\/)(\w{1,3})(-|\/)/.test(DefaultDate)) {
if (this.format.substr(0,1) == 'D') { // Starts with days
var DayPart = RegExp.$1;
var MonthPart = RegExp.$3;
}
else { // Starts with months
var MonthPart = RegExp.$1;
var DayPart = RegExp.$3;
}
MonthPart = (/\d{1,2}/i.test(MonthPart)) ? parseInt(MonthPart,10)-1 : getMonthIndex(MonthPart);
this.setPicked(YearPart, MonthPart, DayPart);
}
else SetGoodDate(this, true);
}
else SetGoodDate(this, true);
}
}
}
// Main function that creates the form elements
function DateInput(DateName, Required, DateFormat, DefaultDate) {
if (arguments.length == 0) document.writeln('<span style="color:red;font-size:' + FontSize + 'px;font-family:' + FontFamily + ';">ERROR: Missing required parameter in call to \'DateInput\': [name of hidden date field].</span>');
else {
// Handle DateFormat
if (arguments.length < 3) { // The format wasn't passed in, so use default
DateFormat = DefaultDateFormat;
if (arguments.length < 2) Required = false;
}
else if (/^(Y{2,4}(-|\/)?)?((MON)|(MM?M?)|(DD?))(-|\/)?((MON)|(MM?M?)|(DD?))((-|\/)Y{2,4})?$/i.test(DateFormat)) DateFormat = DateFormat.toUpperCase();
else { // Passed-in DateFormat was invalid, use default format instead
var AlertMessage = 'WARNING: The supplied date format for the \'' + DateName + '\' field is not valid: ' + DateFormat + '\nTherefore, the default date format will be used instead: ' + DefaultDateFormat;
DateFormat = DefaultDateFormat;
if (arguments.length == 4) { // DefaultDate was passed in with an invalid date format
var CurrentDate = new storedMonthObject(DateFormat, Today.getFullYear(), Today.getMonth(), Today.getDate());
AlertMessage += '\n\nThe supplied date (' + DefaultDate + ') cannot be interpreted with the invalid format.\nTherefore, the current system date will be used instead: ' + CurrentDate.formatted;
DefaultDate = CurrentDate.formatted;
}
alert(AlertMessage);
}
// Define the current date if it wasn't set already
if (!CurrentDate) var CurrentDate = new storedMonthObject(DateFormat, Today.getFullYear(), Today.getMonth(), Today.getDate());
// Handle DefaultDate
if (arguments.length < 4) { // The date wasn't passed in
DefaultDate = (Required) ? CurrentDate.formatted : ''; // If required, use today's date
}
// Creates the calendar object!
eval(DateName + '_Object=new calendarObject(\'' + DateName + '\',\'' + DateFormat + '\',\'' + DefaultDate + '\')');
// Determine initial viewable state of day, year, and calendar icon
if ((Required) || (arguments.length == 4)) {
var InitialStatus = '';
var InitialDate = eval(DateName + '_Object.picked.formatted');
}
else {
var InitialStatus = ' style="visibility:hidden"';
var InitialDate = '';
eval(DateName + '_Object.setPicked(' + Today.getFullYear() + ',' + Today.getMonth() + ',' + Today.getDate() + ')');
}
// Create the form elements
with (document) {
writeln('<input type="hidden" name="' + DateName + '" value="' + InitialDate + '">');
// Find this form number
for (var f=0;f<forms.length;f++) {
for (var e=0;e<forms[f].elements.length;e++) {
if (typeof forms[f].elements[e].type == 'string') {
if ((forms[f].elements[e].type == 'hidden') && (forms[f].elements[e].name == DateName)) {
eval(DateName + '_Object.formNumber='+f);
break;
}
}
}
}
writeln('<table cellpadding="0" cellspacing="2"><tr>' + String.fromCharCode(13) + '<td valign="middle">');
writeln('<select class="calendarDateInput" id="' + DateName + '_Month_ID" onChange="' + DateName + '_Object.changeMonth(this)" name=ringmonth>');
if (!Required) {
var NoneSelected = (DefaultDate == '') ? ' selected' : '';
writeln('<option value=""' + NoneSelected + '>' + UnselectedMonthText + '</option>');
}
for (var i=0;i<12;i++) {
MonthSelected = ((DefaultDate != '') && (eval(DateName + '_Object.picked.monthIndex') == i)) ? ' selected' : '';
writeln('<option value="' + i + '"' + MonthSelected + '>' + MonthNames[i]+ '</option>');
}
writeln('</select>' + String.fromCharCode(13) + '</td>' + String.fromCharCode(13) + '<td valign="middle">');
writeln('<select' + InitialStatus + ' class="calendarDateInput" id="' + DateName + '_Day_ID" onChange="' + DateName + '_Object.changeDay(this)" name=ringday>');
for (var j=1;j<=eval(DateName + '_Object.picked.dayCount');j++) {
DaySelected = ((DefaultDate != '') && (eval(DateName + '_Object.picked.day') == j)) ? ' selected' : '';
writeln('<option' + DaySelected + '>' + j + '</option>');
}
writeln('</select>' + String.fromCharCode(13) + '</td>' + String.fromCharCode(13) + '<td valign="middle">');
writeln('<input name=ringyear ' + InitialStatus + ' class="calendarDateInput" type="text" id="' + DateName + '_Year_ID" size="' + eval(DateName + '_Object.picked.yearPad.length') + '" maxlength="' + eval(DateName + '_Object.picked.yearPad.length') + '" title="Year" value="' + eval(DateName + '_Object.picked.yearPad') + '" onKeyPress="return YearDigitsOnly(window.event)" onKeyUp="' + DateName + '_Object.checkYear(this)" onBlur="' + DateName + '_Object.fixYear(this)">');
write('<td valign="middle">' + String.fromCharCode(13) + '<a' + InitialStatus + ' id="' + DateName + '_ID_Link" href="javascript:' + DateName + '_Object.show()" onMouseOver="return ' + DateName + '_Object.iconHover(true)" onMouseOut="return ' + DateName + '_Object.iconHover(false)">选择日期</a> ');
writeln('<span id="' + DateName + '_ID" style="position:absolute;visibility:hidden;width:' + (CellWidth * 7) + 'px;background-color:' + CalBGColor + ';border:1px solid dimgray;" onMouseOver="' + DateName + '_Object.handleTimer(true)" onMouseOut="' + DateName + '_Object.handleTimer(false)">');
writeln('<table width="' + (CellWidth * 7) + '" cellspacing="0" cellpadding="1">' + String.fromCharCode(13) + '<tr style="background-color:' + TopRowBGColor + ';">');
writeln('<td id="' + DateName + '_Previous_ID" style="cursor:default" align="center" class="calendarDateInput" style="height:' + CellHeight + '" onClick="' + DateName + '_Object.previous.go()" onMouseDown="VirtualButton(this,true)" onMouseUp="VirtualButton(this,false)" onMouseOver="return ' + DateName + '_Object.previous.hover(this,true)" onMouseOut="return ' + DateName + '_Object.previous.hover(this,false)" title="' + eval(DateName + '_Object.previous.monthName') + '"> << </td>');
writeln('<td id="' + DateName + '_Current_ID" style="cursor:pointer" align="center" class="calendarDateInput" style="height:' + CellHeight + '" colspan="5" onClick="' + DateName + '_Object.displayed.goCurrent()" onMouseOver="self.status=\'Click to view ' + CurrentDate.fullName + '\';return true;" onMouseOut="self.status=\'\';return true;" title="Show Current Month">' + eval(DateName + '_Object.displayed.fullName') + '</td>');
writeln('<td id="' + DateName + '_Next_ID" style="cursor:default" align="center" class="calendarDateInput" style="height:' + CellHeight + '" onClick="' + DateName + '_Object.next.go()" onMouseDown="VirtualButton(this,true)" onMouseUp="VirtualButton(this,false)" onMouseOver="return ' + DateName + '_Object.next.hover(this,true)" onMouseOut="return ' + DateName + '_Object.next.hover(this,false)" title="' + eval(DateName + '_Object.next.monthName') + '"> >></td></tr>' + String.fromCharCode(13) + '<tr>');
for (var w=0;w<7;w++) writeln('<td width="' + CellWidth + '" align="center" class="calendarDateInput" style="height:' + CellHeight + ';width:' + CellWidth + ';font-weight:bold;border-top:1px solid dimgray;border-bottom:1px solid dimgray;">' + WeekDays[w] + '</td>');
writeln('</tr>' + String.fromCharCode(13) + '</table>' + String.fromCharCode(13) + '<span id="' + DateName + '_DayTable_ID">' + eval(DateName + '_Object.buildCalendar()') + '</span>' + String.fromCharCode(13) + '</span>' + String.fromCharCode(13) + '</td>' + String.fromCharCode(13) + '</tr>' + String.fromCharCode(13) + '</table>');
}
}
}
<script>DateInput('orderdate', true, 'DD-MON-YYYY')</script>
