Variable Scope In AJAX Calls

one question I always ask myself is how is it possible that javascript has still a reference in a callback function of a AJAX request when the variable was declared in the function

Solution 1:

This is possible using something called closures. There are many resources for this:

Here's a few from a google:

http://www.webreference.com/programming/javascript/rg36/

http://jibbering.com/faq/notes/closures/