您可以使用.always()，并在其中检查每个promise并检查它是否已解决或失败。

var promises = [ajaxDeferred1, ajaxDeferred2]

$.when.apply($, promises)
  .always(function() {
    $.each(promises, function(i) {
      this.done(function(result) {
        console.log('promise', i, 'resolved');
      }).fail(function(error) {
        console.log('promise', i, 'failed');
      });
    });
  });

JSFiddle demo：https://jsfiddle.net/pr45eov1/3/

我喜欢@Miguel Mota的回答。但作为替代方案，如果延迟对象失败，您将取回延迟对象。你可以在上面添加一些数据：

var dfd1 = jQuery.ajax({
    method: 'GET',
    url: 'some request that fails first',
    timeout: 1
});

dfd1.id = 1;

var dfd2 = jQuery.ajax({
    method: 'GET',
    url: 'some request that fails second',
    timeout: 1000
});

dfd2.id = 2;

jQuery.when(dfd1, dfd2)
    .done(function () { })
    .fail(function (request) {
        // id: 1
        console.log('id: ' + request.id);
    });

当有多个请求时使用$.完成错误处理

var request1 = $.ajax({
    url: '...',
    type: 'GET',
    data: {
        // data
    }
});

var request2 = $.ajax({
    url: '...',
    type: 'GET',
    data: {
        // data
    }
});

$.when(request1, request2)
.done(
    function(response1, response2) {

        // success response from both

        var jsonMvtoData = response1[0];
        var resp1statusCode = response1[2].status;

        var jsonTipoOperacion = response2[0];
        var resp2statusCode = response2[2].status;

})
.fail(function(){

    // One or both requests failed

    [request1, request2].forEach(function(req) {
        req.fail(function(jqXHR) {

           // if both request fails, this will execute twice
           // you can do what u want with the json responses
           // for example store all of them in an array
                
            if (jqXHR.responseText) {
                try {
                    // Parsed JSON from failed request
                    var parsedJSON = JSON.parse(jqXHR.responseText);
                  console.error("JSON from failed request:", jqXHR.responseJSON);
                } catch (e) {
                    console.error("Failed to parse JSON:", e);
                }
            }

        });
    });
});