How to repeat rejected ajax promise while accessing previous promise results in a .then() chain

Question

How to repeat rejected ajax promise, if i call my ajax inside returned promiseB(…) function like in that answer - first link - return promiseB(…).then(makeBhandler(…, resultA));
and have something like that inside promiseB(…):

             -1           function promiseB(…){                           
                 return new Promise(function(resolve, reject) {
                            var xhr = new XMLHttpRequest();
                            xhr.onload = function () {
                                resolve(xhr.response);
                            } 
                            xhr.open('GET', img_src);
                            xhr.responseType = 'blob';
                            xhr.send();
                        });
                    }

        -2        function promiseB(…){                           
                            return $.ajax({
                            url: upload_url, 
                            type: 'POST',
                            data: bulbSend,
                            dataType: 'json',
                            processData: false,
                            contentType: false,
                        });                                      

                    }         
   -3           function promiseB(…){ return $.post('api', params.join('&'))  }

so how can i stop continue to .then statement and repeat ajax inside promiseB with some timeout? How to freeze chain continue, may be i need to use .done instead of .then?

do you want to make the ajax call twice if the call fails once — Ammar Hasan, Mar 20 '16 at 13:50
@ Ammar Hasan yes, i think so, if ajax response is error " many requests per second" i need to set timeout and then execute it again and only if it is done successfully return resolved promise and continue .then(....)... — Whats Myname, Mar 20 '16 at 13:58
Just chain a `.catch` to it (that is, if you're not using jQuery) — Bergi, Mar 20 '16 at 14:41
Have a look at [these examples](https://stackoverflow.com/search?q=retry+%5Bpromise%5D) — Bergi, Mar 20 '16 at 14:43
@Bergi but what if i do with $.post, $.get, $.ajax ? should i replace them with native XMLHttpRequest() s? — Whats Myname, Mar 20 '16 at 14:52
@WhatsMyname: [not necessarily](http://stackoverflow.com/a/31327725/1048572) — Bergi, Mar 20 '16 at 15:01
@Bergi , Please, give advice about ajax requests timeout ( if server has a limit on requests per second) — Whats Myname, Mar 20 '16 at 16:21

How to repeat rejected ajax promise while accessing previous promise results in a .then() chain

0 Answers0