Simple Calendar

Francis Cocharrua Jul 7, 2006

This script displays a calendar page of the chosen month and year. The function takes a date object as its parameter. If it is omitted, the calendar will default to the date on the client computer.

The JavaScript Source: Time & Date : Simple Calendar

Simply click inside the window below, use your cursor to highlight the script, and copy [Control]+C the script into a new file in your text editor (such as Note Pad) and save [Control+S]. The script is yours!!!

/* This script and many more are available free online at
The JavaScript Source :: http://www.javascriptsource.com
Created by: Francis Cocharrua :: http://scripts.franciscocharrua.com/ */

function calendar(date) {
  // If no parameter is passed use the current date.
  if(date == null)
     date = new Date();

day = date.getDate();
  month = date.getMonth();
  year = date.getFullYear();

months = new Array('January','February','March','April','May','June','July','August','September','October','November','December');

this_month = new Date(year, month, 1);
  next_month = new Date(year, month + 1, 1);

// Find out when this month starts and ends.
  first_week_day = this_month.getDay();
  days_in_this_month = Math.round((next_month.getTime() - this_month.getTime()) / (1000 * 60 * 60 * 24));

calendar_html = '<table style="background-color:666699; color:ffffff;">';
  calendar_html += '<tr><td colspan="7" style="background-color:9999cc; color:000000; text-align: center;">' + months[month] + ' ' + year + '</td></tr>';
  calendar_html += '<tr>';

// Fill the first week of the month with the appropriate number of blanks.
  for(week_day = 0; week_day < first_week_day; week_day++) {
    calendar_html += '<td style="background-color:9999cc; color:000000;"> </td>';
  }

week_day = first_week_day;
  for(day_counter = 1; day_counter <= days_in_this_month; day_counter++) {
    week_day %= 7;
    if(week_day == 0)
      calendar_html += '</tr><tr>';

// Do something different for the current day.
    if(day == day_counter)
      calendar_html += '<td style="text-align: center;"><b>' + day_counter + '</b></td>';
    else
      calendar_html += '<td style="background-color:9999cc; color:000000; text-align: center;"> ' + day_counter + ' </td>';

week_day++;
  }

calendar_html += '</tr>';
  calendar_html += '</table>';

// Display the calendar.
  document.write(calendar_html);
}

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