[hunchentoot-devel] ht-simple-ajax

Oleg Sivokon olegsivokon at gmail.com
Mon Apr 4 21:37:34 UTC 2011


When you are testing in IE, you could really use MSVS, it has a free
version. The free version has limited debugging capabilities less templates
/ documentation. But, at least, you could have a debugger for JavaScript,
and that would help you find, not only this, but other JavaScript related
problems in IE.
http://www.microsoft.com/express/Web/
>From what I can tell, there are strange places in your code. For example,
returning alert() doesn't make sense because alert() returns undefined. You
don't really have to call request.send(null), you could do request.send(),
but if you wanted to encode name-value pairs, this function is the right
place to do it (when sending POST requests).
http://www.w3.org/TR/XMLHttpRequest/#the-send-method
http://msdn.microsoft.com/en-us/library/ms536736%28v=vs.85%29.aspx
In your example, you are sending a GET request, therefore, you don't need
any arguments.
Also, there may be subtle differences in how browsers will treat
non-significant white space in XML, so response.firstChild.firstChild.nodeValue
may be just a couple of blanks, depending on how your XML looks like, or it
may give you an error, if the response.firstChild is a text node.
delete request; - is a useless line, JavaScript is a managed runtime, so any
local variable will seize to exist once the function returns, unless it was
referenced outside the function's scope (in which case "deleting" it will
have no effect). It is different, from, for example, C++ where delete would
free memory. In JavaScript it is used to remove dynamic references from
where they existed (essentially, someObject.someProperty = undefined is the
same as delete someObject.someProperty).
HTH.
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