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A JavaScript Weekly Calendar

, 14 Feb 2006
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This calendar can be used as a date picker or to select a weekly day range in the selected month.

Sample Image - js_weekly_calendar_IE.jpg

Introduction

The calendar generated by this script can be used as a date picker or to select a weekly day range in the selected month. This script has been tested only with Internet Explorer 6.0, Firefox 1.0.7, and Opera 8.51 on a Windows 2003 Server.

Usage

Using this calendar, you can select the start week day, the default is Monday. The calendar's layout is customizable by CSS. To use it, you must insert the following HTML code in the head section of your page:

// insert this code in the head section
// use this css to modify the calendar layout
<LINK REL=StyleSheet HREF="calendar.css" TYPE="text/css">
// include the calendar javascript
<SCRIPT LANGUAGE="JavaScript" 
         SRC="weeklycalendar.js"></SCRIPT>
<script language="javascript">
    // call the function to build the calendar
    // function's param specify the first day of week 
    // 0=Sunday, 1 = Monday, ..., 6=Saturday
    buildWeeklyCalendar(1);
</script>

If the first day of the week is Monday, the column week contains the week number, otherwise it shows the "<" symbol.

Sample Image - js_weekly_calendar_firefox.jpg

The calendar is dynamically added to the HTML page and it is contained in a div element. To display the calendar, it is necessary to call the w_displayCalendar function. This function accepts two input parameters; they must be the existing element IDs used by the script to return values.

//
// display calendar
//
function w_displayCalendar(linkedId1, linkedId2) 
{
    w_linkedInputText_1 = linkedId1;
    w_linkedInputText_2 = linkedId2;
    
    w_renderCalendar(0);
    if(navigator.userAgent.indexOf("MSIE") != -1) 
    {
        weeklyCalendar.style.left=
          window.event.x+document.body.scrollLeft;
        weeklyCalendar.style.top=
          window.event.y+document.body.scrollTop;
    } 
    else if ((navigator.appName.indexOf("Netscape") != -1) || 
             (navigator.appName.indexOf("Opera") != -1))
    {
        document.getElementById('weeklyCalendar').style.left=gx + 5;
        document.getElementById('weeklyCalendar').style.top=gy + 5;
    }
    document.getElementById('weeklyCalendar').style.visibility = "visible";
}

Using the calendar as a date picker, it automatically fills an input text element passing its ID as a parameter of the w_displayCalendar function.

<tr>
   <td style="height: 78px">Date picker</td><td style="height: 78px">
      <!--  this is the datepicker input text -->    
      <input type="text"  name="DatePicker" id="DatePicker" size="35" maxlength="80">
      <!--  attach the w_displayCalendar function to the onClick event -->
      <input type="button" value="..." 
         onClick="w_displayCalendar('DatePicker',null);">
   </td>
</tr>

Using the calendar as a weekly range selector, clicking on the week number or the < symbol, it automatically fills the two input text.

<tr>
    <td style="height: 131px">Weekly Range Selector</td>
      <!--  this is start range input text -->    
      <td style="height: 131px">Start day:<input type="text" 
         name="WeeklyDateStart" id="WeeklyDateStart" 
         size="35" maxlength="80"><br />
      <!--  this is end range input text -->
      End day: <input type="text"  name="WeeklyDateEnd" 
         id="WeeklyDateEnd" size="35" maxlength="80">
      <!--  attach the w_displayCalendar function to the onClick event -->
      <input type="button" value="..." 
        onClick="w_displayCalendar('WeeklyDateStart','WeeklyDateEnd');">
   </td>
</tr>

Sample Image - js_weekly_calendar_opera.jpg

New Feature

Now you can use the calendar as a simple date picker using the new function w_displayDatePicker. This function shows the calendar and automatically hides the column week using a new CSS class.

<tr>
   <td style="height: 78px">Date picker</td>
   <td style="height: 78px">
      <!--  this is the datepicker input text -->
      <input type="text"  name="DatePicker" 
             id="DatePicker" size="35" maxlength="80">
      <!--  attach the w_displayCalendar function to the onClick event -->
      <input type="button" value="..."
         onClick="w_displayDatePicker('DatePicker');">
   </td>
</tr>

Conclusion

The Zip source file contains the weekly calendar script, the CSS and two demo HTML pages.

I hope you enjoy this article.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Massimo Beatini
Web Developer
Italy Italy
No Biography provided

Comments and Discussions

 
GeneralRe: How to set WeekDate the first day of row ?! exactly that it is one day of the previous month Pinmembercpsaran15-Sep-09 4:19 
GeneralRe: How to set WeekDate the first day of row ?! exactly that it is one day of the previous month [modified] PinmemberMassimo Beatini15-Sep-09 21:38 
GeneralRe: How to set WeekDate the first day of row ?! exactly that it is one day of the previous month [modified] PinmemberDaFleaster19-Mar-12 8:20 
GeneralRe: How to set WeekDate the first day of row ?! exactly that it is one day of the previous month PinmemberMassimo Beatini15-Sep-09 21:51 
QuestionWay to pass date to calendar ? Pinmemberbluter13-Oct-06 4:25 
AnswerRe: Way to pass date to calendar ? PinmemberMassimo Beatini14-Nov-06 23:10 
QuestionDisable all the days before today! Pinmemberwebmangr9-Oct-06 3:27 
AnswerRe: Disable all the days before today! PinmemberMassimo Beatini9-Oct-06 4:27 
GeneralRe: Disable all the days before today! Pinmemberwebmangr9-Oct-06 21:31 
GeneralRe: Disable all the days before today! Pinmemberwebmangr9-Oct-06 21:38 
GeneralRe: Disable all the days before today! Pinmemberwebmangr9-Oct-06 21:44 
GeneralRe: Disable all the days before today! PinmemberMassimo Beatini9-Oct-06 23:08 
GeneralRe: Disable all the days before today! PinmemberMassimo Beatini9-Oct-06 22:38 
AnswerRe: Disable all the days before today! Pinmemberclausont24-May-08 6:19 
Generalsmart navigation problem Pinmembershesho64211-Sep-06 2:07 
GeneralInformations about calendar script PinmemberEnrico Amisano7-Sep-06 6:51 
AnswerRe: Informations about calendar script PinmemberMassimo Beatini8-Sep-06 4:58 
QuestionRe: Informations about calendar script Pinmemberwebmangr9-Oct-06 2:41 
GeneralPositioning and Changing the beginning of the Week Pinmembervanvank7-Sep-06 3:37 
AnswerRe: Positioning and Changing the beginning of the Week PinmemberMassimo Beatini8-Sep-06 5:21 
Questionhow to display the day of the week and week number for given date Pinmemberjanes7613-Jul-06 0:06 
AnswerRe: how to display the day of the week and week number for given date PinmemberMassimo Beatini13-Jul-06 5:56 
QuestionHide onclick out Pinmemberwebmangr12-Jul-06 23:43 
AnswerRe: Hide onclick out PinmemberMassimo Beatini14-Jul-06 4:54 
Questionhow to display the week number if the default start day for week is sunday Pinmemberhappy_she2-Apr-06 21:16 

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