javascript - 如何从单个常见的 ajax 函数读取响应？

Question

我写了一个通用的ajax函数。而不是多次写。所以我只是将发布数据和 URL 发送到我的常用函数。到这里一切都很好，我也收到了回复。但我在阅读该回复时遇到了麻烦。

function _ajax_post(someData,URL)
            {
                var ajaxCall = $.ajax({
                    type: 'POST',                    
                    data: someData,
                    dataType: 'json',
                    url: URL
                });

                ajaxCall.done(function(data) {
                    console.log("A good programmer looks both ways before crossing a one-way street :) ");
                });

                ajaxCall.fail(function(data) {
                    console.log(" Design is choosing how you will fail.");
                });

                ajaxCall.always(function() {
                    console.log("Truth can only be found in one place: the code.");
                });

                return ajaxCall;
            }

我在这里打电话

$('#btnOutput').on('click', function () {
                   var str = $("#out").text();
                   var r = _ajax_post({"data":str},url+"roles/vu_menus/tets");
                   console.log(r);                          
                });

在我的 console.log() 中，我收到类似的响应

{readyState: 1, getResponseHeader: ƒ, getAllResponseHeaders: ƒ, setRequestHeader: ƒ, overrideMimeType: ƒ, …}
abort: ƒ (a)
always: ƒ ()
complete: ƒ ()
done: ƒ ()
error: ƒ ()
fail: ƒ ()
getAllResponseHeaders: ƒ ()
getResponseHeader: ƒ (a)
overrideMimeType: ƒ (a)
pipe: ƒ ()
progress: ƒ ()
promise: ƒ (a)
readyState: 4
responseJSON: {data: "[{"text":"Home","href":"http://home.com","icon":"f…"fas fa-filter","target":"_self","title":""}]}]}]"}
responseText: "{"data":"[{\"text\":\"Home\",\"href\":\"http:\/\/home.com\",\"icon\":\"fas fa-home\",\"target\":\"_top\",\"title\":\"My Home\"},{\"text\":\"Opcion2\",\"href\":\"\",\"icon\":\"fas fa-chart-bar\",\"target\":\"_self\",\"title\":\"\"},{\"text\":\"Opcion3\",\"href\":\"\",\"icon\":\"fas fa-bell\",\"target\":\"_self\",\"title\":\"\"},{\"text\":\"Opcion4\",\"href\":\"\",\"icon\":\"fas fa-crop\",\"target\":\"_self\",\"title\":\"\"},{\"text\":\"Opcion5\",\"href\":\"\",\"icon\":\"fas fa-flask\",\"target\":\"_self\",\"title\":\"\"},{\"text\":\"Opcion6\",\"href\":\"\",\"icon\":\"fas fa-map-marker\",\"target\":\"_self\",\"title\":\"\"},{\"text\":\"Opcion7\",\"href\":\"\",\"icon\":\"fas fa-search\",\"target\":\"_self\",\"title\":\"\",\"children\":[{\"text\":\"Opcion7-1\",\"href\":\"\",\"icon\":\"fas fa-plug\",\"target\":\"_self\",\"title\":\"\",\"children\":[{\"text\":\"Opcion7-1-1\",\"href\":\"\",\"icon\":\"fas fa-filter\",\"target\":\"_self\",\"title\":\"\"}]}]}]"}"
setRequestHeader: ƒ (a,b)
state: ƒ ()
status: 200
statusCode: ƒ (a)
statusText: "OK"
success: ƒ ()
then: ƒ ()
__proto__: Object

现在，我怎样才能获得responseText值？

Answer 1

当您的 ajax 包装器返回 ajax promise 时，您可以在点击事件处理程序中使用它，方式与在包装器中完全相同:

function _ajax_post(someData,URL)
{
    var ajaxCall = $.ajax({
                type: 'POST',                    
                data: someData,
                dataType: 'json',
                url: URL
    });


    ajaxCall.done(function(data) {
        console.log("global done");
    });

    return ajaxCall;
}

$('#btnOutput').on('click', function () {
   var str = $("#out").text();
   var r = _ajax_post({"data":str}, url+"roles/vu_menus/tets");

   // at this point, r is the ajax promise, so can use .done / .fail etc

   r.done(function(data) { 
     console.log(data); 
   });

});