JAVASCRIPT - Otro calendario

Otro calendario

Compatibilidad: Ms Internet Explorer, Netscape
Este script visualiza un calendario con el mes corriente.

[ Muestra el ejemplo práctico ]

el código para insertar en tu página

<TITLE>Ejemplos Javascript: ejemplo práctico </TITLE>

</HEAD>

<SCRIPT LANGUAGE="JavaScript">
<!--

// Copyright 1996 - Tomer and Yehuda Shiran
// This example will appear in our forthcoming book on JavaScript.
// Feel free to "steal" this code provided that you leave this notice as is.
// Additional examples from the book can be found at http://www.geocities.com/SiliconValley/9000/
// For more information contact Tomer or Yehuda Shiran <yshiran@iil.intel.com>

setCal()

function getTime() {
	// initialize time-related variables with current time settings
	var now = new Date()
	var hour = now.getHours()
	var minute = now.getMinutes()
	now = null
	var ampm = ""

// validate hour values	and set value of ampm
	if (hour >= 12) {
		hour -= 12
		ampm = "PM"
	} else
		ampm = "AM"
	hour = (hour == 0) ? 12 : hour

// add zero digit to a one digit minute
	if (minute < 10)
		minute = "0" + minute // do not parse this number!

// return time string
	return hour + ":" + minute + " " + ampm
}

function leapYear(year) {
	if (year % 4 == 0) // basic rule
		return true // is leap year
	/* else */ // else not needed when statement is "return"
		return false // is not leap year
}

function getDays(month, year) {
	// create array to hold number of days in each month
	var ar = new Array(12)
	ar[0] = 31 // January
	ar[1] = (leapYear(year)) ? 29 : 28 // February
	ar[2] = 31 // March
	ar[3] = 30 // April
	ar[4] = 31 // May
	ar[5] = 30 // June
	ar[6] = 31 // July
	ar[7] = 31 // August
	ar[8] = 30 // September
	ar[9] = 31 // October
	ar[10] = 30 // November
	ar[11] = 31 // December

// return number of days in the specified month (parameter)
	return ar[month]
}

function getMonthName(month) {
	// create array to hold name of each month
	var ar = new Array(12)
	ar[0] = "Enero"
	ar[1] = "Febrero"
	ar[2] = "Marzo"
	ar[3] = "Abril"
	ar[4] = "Mayo"
	ar[5] = "Junio"
	ar[6] = "Julio"
	ar[7] = "Agosto"
	ar[8] = "Septiembre"
	ar[9] = "Octubre"
	ar[10] = "Noviembre"
	ar[11] = "Diciembre"

// return name of specified month (parameter)
	return ar[month]
}

function setCal() {
	// standard time attributes
	var now = new Date()
	var year = now.getYear()
	var month = now.getMonth()
	var monthName = getMonthName(month)
	var date = now.getDate()
	now = null

// create instance of first day of month, and extract the day on which it occurs
	var firstDayInstance = new Date(year, month, 1)
	var firstDay = firstDayInstance.getDay()
	firstDayInstance = null

// number of days in current month
	var days = getDays(month, year)

// call function to draw calendar
	drawCal(firstDay + 1, days, date, monthName, 1900 + year)
}

function drawCal(firstDay, lastDate, date, monthName, year) {
	// constant table settings
	var headerHeight = 50 // height of the table's header cell
	var border = 2 // 3D height of table's border
	var cellspacing = 4 // width of table's border
	var headerColor = "midnightblue" // color of table's header
	var headerSize = "+3" // size of tables header font
	var colWidth = 60 // width of columns in table
	var dayCellHeight = 25 // height of cells containing days of the week
	var dayColor = "darkblue" // color of font representing week days
	var cellHeight = 40 // height of cells representing dates in the calendar
	var todayColor = "red" // color specifying today's date in the calendar
	var timeColor = "purple" // color of font representing current time

// create basic table structure
	var text = "" // initialize accumulative variable to empty string
	text += '<CENTER>'
	text += '<TABLE BORDER=' + border + ' CELLSPACING=' + cellspacing + '>' // table settings
	text += 	'<TH COLSPAN=7 HEIGHT=' + headerHeight + '>' // create table header cell
	text += 		'<FONT COLOR="' + headerColor + '" SIZE=' + headerSize + '>' // set font for table header
	text += 			monthName + ' ' + year 
	text += 		'</FONT>' // close table header's font settings
	text += 	'</TH>' // close header cell

// variables to hold constant settings
	var openCol = '<TD WIDTH=' + colWidth + ' HEIGHT=' + dayCellHeight + '>'
	openCol += '<FONT COLOR="' + dayColor + '">'
	var closeCol = '</FONT></TD>'

// create array of abbreviated day names
	var weekDay = new Array(7)
	weekDay[0] = "dom"
	weekDay[1] = "lun"
	weekDay[2] = "mar"
	weekDay[3] = "mie"
	weekDay[4] = "jue"
	weekDay[5] = "vie"
	weekDay[6] = "sab"
	
	// create first row of table to set column width and specify week day
	text += '<TR ALIGN="center" VALIGN="center">'
	for (var dayNum = 0; dayNum < 7; ++dayNum) {
		text += openCol + weekDay[dayNum] + closeCol 
	}
	text += '</TR>'
	
	// declaration and initialization of two variables to help with tables
	var digit = 1
	var curCell = 1
	
	for (var row = 1; row <= Math.ceil((lastDate + firstDay - 1) / 7); ++row) {
		text += '<TR ALIGN="right" VALIGN="top">'
		for (var col = 1; col <= 7; ++col) {
			if (digit > lastDate)
				break
			if (curCell < firstDay) {
				text += '<TD></TD>';
				curCell++
			} else {
				if (digit == date) { // current cell represent today's date
					text += '<TD HEIGHT=' + cellHeight + '>'
					text += '<FONT COLOR="' + todayColor + '">'
					text += digit
					text += '</FONT><BR>'
					text += '<FONT COLOR="' + timeColor + '" SIZE=2>'
					text += '<CENTER>' + getTime() + '</CENTER>'
					text += '</FONT>'
					text += '</TD>'
				} else
					text += '<TD HEIGHT=' + cellHeight + '>' + digit + '</TD>'
				digit++
			}
		}
		text += '</TR>'
	}
	
	// close all basic table tags
	text += '</TABLE>'
	text += '</CENTER>'

// print accumulative HTML string
	document.write(text) 
}

// -->
</SCRIPT>

</body>
</html>