I've noticed a frequent problem I seem to be getting in Chrome, though not in Internet Explorer or FireFox. Sometimes using $ instead of jQuery to reference the API functions throws errors. It seems random as well because a line of code reading $.ajax will work and then two lines later jQuery.ajax will have to be used instead. Somehow the $ pointer becomes undefined in Chrome.

It is for sure not something I am doing, I've spent weeks testing and checking to validate this. Browsing for others with the same problem led me to find the use of jQuery instead of $.