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Create a calendar
اهمیت: 4
Write a function createCalendar(elem, year, month).
The call should create a calendar for the given year/month and put it inside elem.
The calendar should be a table, where a week is <tr>, and a day is <td>. The table top should be <th> with weekday names: the first day should be Monday, and so on till Sunday.
For instance, createCalendar(cal, 2012, 9) should generate in element cal the following calendar:
P.S. For this task it’s enough to generate the calendar, should not yet be clickable.
We’ll create the table as a string: "<table>...</table>", and then assign it to innerHTML.
The algorithm:
- Create the table header with
<th>and weekday names. - Create the date object
d = new Date(year, month-1). That’s the first day ofmonth(taking into account that months in JavaScript start from0, not1). - First few cells till the first day of the month
d.getDay()may be empty. Let’s fill them in with<td></td>. - Increase the day in
d:d.setDate(d.getDate()+1). Ifd.getMonth()is not yet the next month, then add the new cell<td>to the calendar. If that’s a Sunday, then add a newline“</tr><tr>”. - If the month has finished, but the table row is not yet full, add empty
<td>into it, to make it square.