progress-animation while waiting for positive file-exists-check with jquery-ajax

Puh, long title, but actually very simple. Imagine you have a web-project that does some processing-intensive operations and you don’t want your users to watch the stupid browser-loading-icon. Instead you want to place a progress-loader to your site. In this case we wait for existence of a special file called „a.txt“ in the root-directory. So […]