Blocking jQuery.ajax requests and jQuery.ajaxQueue
by Kristian Kraljic, April 17, 2016
With AJAX, web applications can send data to and retrieve from a server (as the name suggests) asynchronously. Well, that’s not entirely true. Most AJAX libraries and APIs do indeed provide functions to retrieve data synchronously… even if it sounds like a contradiction. In jQuery for example, you may set the
async parameter to
false, in order to do a synchronous request. Doing synchronous requests from time to time makes a lot of sense, even in modern web applications given the right use case. Now you might ask yourself, "well if I don’t do it often and process the data asynchronously otherwise, what could possibly go wrong?". In this article I would like show you one case, in which mixing synchronous and asynchronous AJAX had completely messed up the web experience of one of my applications.