Could there be a universal event handler for ajax requests that is automatically triggered upon the completion of any ajax request?
This is something I am exploring while developing a greasemonkey script for an ajax-heavy website. In past scripts, I have resorted to running the main function at intervals or modifying portions of the site's javascript, both of which have proved to be messy solutions.
It is not possible with standard XMLHttpRequest. Certain libraries, such as jQuery, offer solutions like wrappers (e.g. ajaxComplete) for this purpose. These wrappers will only be triggered for ajax requests that also utilize the wrapper (e.g. jQuery.ajax).
With the use of jQuery, I am able to achieve the following:
$(document).ready(function() {
$("#contentLoading").hide();
$("#contentLoading").ajaxSend(function(r,s){
$(this).show();
$("#ready").hide();
});
$("#contentLoading").ajaxStop(function(r,s){
$(this).hide();
$("#ready").show();
});
Rather than toggling the visibility of elements, a more generic function could be implemented for efficiency.
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