Why is $(document).ready not firing for me?

Question

In a php file i have used include to include the following js.php file and prior to that i have included the jquery file.

Answer 1

Another cause that will silently fail, and all remaining callbacks never called:

$(document).ready(null);

So check if you have variables or syntax errors that return null. Like this one:

$(document).ready(function($){}(jQuery));

Notice that the function above is called instantly and undefined is returned.