See? I told ya. Dumb question. Glad you worked it out, and thanks for
sharing the solution! :o)
Chris
Christopher Jordan wrote:
Eric,
What do you get if you alert(formalParameter) inside of blahCallback?
I'm used to using a library like jQuery or AjaxCFC (not really a
library, I know), where this sort of thing is generally taken care of
for me, so it may be a dumb question.
Chris
Eric Knipp wrote:
I am still a bit of a n00b when it comes to advanced AJAX
programming, and I am running into a problem that I'm having a hard
time figuring out. I've already done a number of Googles to try and
find a good solution, and I think I need to do something with
closures (another concept I don't know that well - yet), but I am not
sure how to bring this off.
Basically, I have an asynchronous XMLHTTPRequest, and when it
completes I have a callback function. The callback function needs
access to a parameter that is available only to the function that
invoked the XMLHTTPRequest. The only thing that comes back from the
XMLHTTPRequest object is a status, and that doesn't help me with what
I am trying to do (although trapping that for error handling is
useful but outside of the scope of my question). Here is some code:
blah: function(formalParameter)
{
// assume asyncInvoker is handling the XMLHTTPRequest details.
asyncInvoker('get', 'myurl.cfm?parameter=' + formalParameter,
blahCallback);
}
blahCallback: function(formalParameter)
{
// this is where I need to be able to get to formalParameter, but I
am not sure how.
doSomething(formalParameter);
}
Sorry that this is OT but I figure by now there is a lot of
AJAX around...
Eric
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