重试一个jquery ajax请求，该请求的延迟中附加了回调

您可以

jQuery.ajaxPrefilter

我在上面的示例

jsFiddle

$.ajaxPrefilter(function(opts, originalOpts, jqXHR) {    // you could pass this option in on a "retry" so that it doesn't    // get all recursive on you.    if (opts.refreshRequest) {        return;    }    // our own deferred object to handle done/fail callbacks    var dfd = $.Deferred();    // if the request works, return normally    jqXHR.done(dfd.resolve);    // if the request fails, do something else    // yet still resolve    jqXHR.fail(function() {        var args = Array.prototype.slice.call(arguments);        if (jqXHR.status === 401) { $.ajax({     url: '/refresh',     refreshRequest: true,     error: function() {         // session can't be saved         alert('Your session has expired. Sorry.');         // reject with the original 401 data         dfd.rejectWith(jqXHR, args);     },     success: function() {         // retry with a copied originalOpts with refreshRequest.         var newOpts = $.extend({}, originalOpts, {  refreshRequest: true         });         // pass this one on to our deferred pass or fail.         $.ajax(newOpts).then(dfd.resolve, dfd.reject);     } });        } else { dfd.rejectWith(jqXHR, args);        }    });    // NOW override the jqXHR's promise functions with our deferred    return dfd.promise(jqXHR);});

之所以有效，是因为

deferred.promise(object)

注意： 对于任何其他发现此问题的人，如果您在ajax选项中使用

success:

error:

.done(callback)

.fail(callback)