[Javascript] To DOM or not -- calendar popup

[mwarden at gmail.com (Matt Warden)]

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Bill Moseley wrote:
> On Wed, Mar 29, 2006 at 02:43:26PM -0500, Matt Warden wrote:
> 
>>It's not that bad. Something like:
>>
>>if (document.getElementById && document.createElement) {
>>	var field = document.getElementById('whatever');
>>	if (field) {
>>		var img = document.createElement('img');
>>		img.src = 'whatever.foo';
>>		img.onclick = calPopupFunction;
>>		field.parentNode.appendChild(img);
>>	}
>>}
> 
> 
> Thanks.  Yes, not bad at all.
> 
> Another thing that has been burning a hole in my to-ask file is what's
> the difference between using img.onclick above vs. using
> addEventListner/attachEvent -- besides being able to attach more than
> one event.  Are there times when one is more appropriate?  Or are they
> basically the same thing?

I'm not the best person to answer your question. I did a little googling
and I did find this:

"the event fired from the onevent attribute will always fire before any
events attached using attachEvent "
http://siteexperts.com/forums/viewConverse.asp?d_id=16454&Sort=0

So it does seem like they are different mechanisms, not simply different
ways of doing the same thing.

See also:
http://www.quirksmode.org/blog/archives/2005/08/addevent_consid.html

This code might help you:

http://mwarden.f2o.org/sandbox/viewsource.php?linemode=0&f=eventlistener2.js

- --
Matt Warden
Miami University
Oxford, OH, USA
http://mattwarden.com


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