jQuery Plugin to Register a Function to Run on UpdatePanel Request

Short post, long title. Here is a simple jQuery plugin that makes it a little easier to add an begin/end request handler to the PageRequestManager on an ASP.NET web form.

(function ($, undefined) {
    $.registerAsyncBegin = function(callback) {
        var prm = Sys.WebForms.PageRequestManager.getInstance();
        if (prm) {
            prm.add_beginRequest(callback);
        }
        return callback;
    };
    $.registerAsyncEnd = function(callback) {
        var prm = Sys.WebForms.PageRequestManager.getInstance();
        if (prm) {
            prm.add_endRequest(callback);
        }
        return callback;
    };
})(jQuery);

This example adds a function to be executed after ever Update Panel request and runs the function. This is useful if you have a function that needs to do some initial processing as well as after a request.

($.registerAsyncEnd(SomeCallbackFunction))();