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Author: Subject: "calendar2.js is not a constructor" error
idrake
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posted on 3/20/2008 at 05:41 PM Reply With Quote
"calendar2.js is not a constructor" error


So I have calendar2.js, calendar.html and my htm page in the same directory, here's my code:

<p>Step One: click the calendar icon below to pick the date you want to fish...
<form name="schedule">
<input type="Text" name="input1" value="">
<a href="javascript:cal2.popup();"><img src="tigra_calendar/img/cal.gif" width="16" height="16" border="0" alt="Click Here to Pick up the date"></a>
</form><script language="JavaScript">
<!-- // create calendar object(s) just after form tag closed
// specify form element as the only parameter (document.forms['formname'].elements['inputname']);
// note: you can have as many calendar objects as you need for your application
var call = new calendar2.js(document.forms['schedule'].elements['input1']);
cal2.year_scroll = true;
cal2.time_comp = false;
//-->
</script>
</p>

and firefox shows two errors:
calendar2.js is not a constructor, and
cal2 is not defined

I'm assuming having them all in the same directory means the path is right (maybe not?), but I have no idea what a constructor is or should be...
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idrake
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posted on 3/20/2008 at 05:53 PM Reply With Quote

looking at some other posts I realize an error in the code was confusing var cal1 for var call--an error made because on my display the number one and letter el are identical.
so, correcting the code to read var cal2 I now get these 2 errors:

calendar2.js is not a constructor
cal2 has no properties

Any help greatly appreciated as always, tks
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tigra
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posted on 3/20/2008 at 08:50 PM Reply With Quote

indeed calendar2.js is not a constructor, but the name of the file.
use it in the <script ..> in the header, like in this fragment from the sample:

<!-- American format mm/dd/yyyy -->
<script language="JavaScript" src="calendar2.js"></script>

now to create the calendar object you call 'calendar2' like in this fragment from the sample:

var cal5 = new calendar2(document.forms['tstest'].elements['input5']);

it worth noticing that you need to stick with the name of the variable. So if you define cal5 then that's what you use to set the properties and call the calendar like in this fragments from the sample:

cal5.year_scroll = true;
cal5.time_comp = false;

and

<a href="javascript:cal5.popup();">
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idrake
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posted on 3/20/2008 at 09:51 PM Reply With Quote

fantastic! my script had it like this: var cal2 = new calendar2.js(document.forms['schedule'].elements['input2']);

removed .js and it works.

but...
the browser window that pops up is too small for the calendar inside of it, and must be dragged open further to reveal the full calendar.

You're great with feedback, thanks!

Can we change the size of the popup window to fit the calendar?
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tigra
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posted on 3/21/2008 at 02:52 PM Reply With Quote

yes, you'll find the size of the window inside calendar2.js in window.open(...) call.
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idrake
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posted on 3/22/2008 at 06:49 PM Reply With Quote

Well, the size of the popup window is only a problem in Firefox, where the calendar size is greater than the window size. It IE and Opera, at least, the calendar resizes to fit the popup window. This isn't a big problem for Firefox users as the popup window itself can be dragged to fit the calendar size by the user.
however, in calendar2.js, in window.open( I've tried changing the sizes of the window without success.
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