How to disable all AJAX requests in a page with jQuery and Javascript ?

Question

I have a page and I would like to disable all AJAX requests with jQuery.

Do you have any ideas? And if it is possible?

if (false) {
  //disable all ajax requests
}

Answer 1

If all of your ajax requests are being sent through jQuery ajax methods (including helper methods), you can do this with beforeSend.

window.ajaxEnabled = true;
$.ajaxSetup({
    beforeSend: function(){ 
        return window.ajaxEnabled; 
    }
});

$.post("http://www.google.com"); // throws an error
window.ajaxEnabled = false;
$.post("http://www.google.com"); // doesn't throw an error

http://jsfiddle.net/k2T95/3

---

And here's one that will block all, regardless of what javascript library is sending it, also based on a global flag. Doesn't affect XDomainRequest obj though

(function (xhr) {
    var nativeSend = xhr.prototype.send;
    window.ajaxEnabled = true;

    xhr.prototype.send = function () {
        if (window.ajaxEnabled) {
             nativeSend.apply(this, arguments);   
        }
    };
}(window.XMLHttpRequest || window.ActiveXObject));

http://jsfiddle.net/k2T95/4/