Ajax :: Button Eating My Lunch - And Dynamically Added Button

May 22, 2010

The main page is called Aj.html. In the 'head' I have mostly some functions to support Ajax call to server PHP (to just 'echo' something so I could see Ajax work). In the 'body', there is a little javascript and a form 'button'. When I click the button, an 'onclick' event causes a function to do the last step or two of the Ajax stuff... and the server PHP element is called... and then my ajax message handler back in Aj.html gets control to just send an alert... and that was the initial experiment ... and it was just so I could see how Ajax works.

Well - then I noticed that the 'button' is only clickable ONE time... And I set about to try to learn whatever I needed to learn to make that button be one that could be used to fire off the Ajax stuff multiple times... But I couldn't get that to work. So, I tried some code to remove the onclick event (during the ajax messaging handling logic in Aj.html) - and then add another onclick event to that same button... but that didn't work. Then, I tried to delete my button altogether - and insert a new button with it's own 'onclick' (which also would fire the ajax stuff) - but that didn't work, either....

Anyway... Now, my biggest curiosity (for the moment, at least) is why I can't dynamically add a button that has the needed onclick stuff to also fire the Ajax stuff... So, I guess I'd like to solve that right now.

What's currently happening is this: when I'm in the part of the code that is defining the dynamic button - and just before that button is added to the form, I define the 'onclick' that is supposed to be a part of that new button... BUT - when that assignment is made, it is almost like javascript is thinking that the request is actually in insert another onclick for the in-progress 'click'... because the new onclick is immediately processed at that point (I don't even make it to the next statement...just boom... the new onclick function is executed).

Also - the new dynamically added button DOES get added okay... but when I click that newly added button, it doesn't fire the Ajax stuff it's supposed to fire (via the onclick for this added button) - instead, it just causes what appears to be like a page refresh ... because the regular button reappears at that point (and then the Ajax stuff will again work off of that 'regular' button).

I'm including the whole script here.

Code:

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