handle ajax error when a user clicks refresh

Question

i apologise if this is something i should be able to look up. all of the terms i wanted were way overloaded..

here is my problem: when i open a page, it fires off a

Answer 1

The above techniques 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.