jQuery $.ajax calls success handler when request fails because of browser reloading

Question

I have the following code:

 $.ajax({
          type: \"POST\",
          url: url,
          data: sendable,
          dataType: \"json\",
          success:         


        

Answer 1

The onbeforeunlaod technique does not work for a periodically refreshing page (for example every half seconds). I have figured out that the error caused by refreshing the page can be avoided using delaying the error handling process by a small amount of time.

Example:

$.ajax(...)
.success(...)
.error(function(jqXHR) {
setTimeout(function() {
  // error showing process
}, 1000);
});

In addition to that

window.onbeforeunload = function() {//stop ajax calls}

event can be used for less frequently refreshing ajax calls.