How do I get the HTTP status code with jQuery

Question

I want to check if a page returns the status code 401  Is this possible     Here is my try  but it only returns 0        ajax        url   http   my-ip test test php        data           complete  function xhr  statusText        alert xhr status

User · Answer

I think you should also implement the error function of the $.ajax method.

error(XMLHttpRequest, textStatus, errorThrown)Function

A function to be called if the request fails. The function is passed three arguments: The XMLHttpRequest object, a string describing the type of error that occurred and an optional exception object, if one occurred. Possible values for the second argument (besides null) are "timeout", "error", "notmodified" and "parsererror".

$.ajax({
    url: "http://my-ip/test/test.php",
    data: {},
    complete: function(xhr, statusText){
        alert(xhr.status); 
    },
    error: function(xhr, statusText, err){
        alert("Error:" + xhr.status); 
    }
});

User · Answer

I encapsulate the jQuery Ajax to a method   var http util   function  type  url  params  success handler  error handler  base url         if base url            url   base url   url             var success   arguments 3  arguments 3  function          var error   arguments 4  arguments 4  function               ajax           type  type          url  url          dataType   json           data  params          success  function  data  textStatus  xhr                 if textStatus      success                    success xhr code  data        there returns the status code                                  error  function  xhr  error text  statusText                 error xhr code  xhr       there returns the status code                         Usage   http util  get    http   localhost 8000 user list    null  function  status code  data        console status code  data     function status code  err       console status code  err

User · Answer

The third argument is the XMLHttpRequest object  so you can do whatever you want     ajax     url     http   example com     type    post     data    a b     done function data  statusText  xhr     var status   xhr status                   200   var head   xhr getAllResponseHeaders      Detail header info

User · Answer

I found this solution where you can simply   check the server response code using status code   Example      ajax   type    POST   url     package callApi createUser   data   JSON stringify data   contentType   application json  charset UTF-8   success  function  response          alert  Account created       statusCode        403  function               Only if your server returns a 403 status code can it come in this block   -          alert  Username already exist             error  function  e        alert  Server error -     e

User · Answer

Use the error callback   For example   jQuery ajax   url     this is not found   data      error  function xhr  status        alert xhr status           Will alert 404

User · Answer

I have had major issues with ajax   jQuery v3 getting both the response status code and data from JSON APIs   jQuery ajax only decodes JSON data if the status is a successful one  and it also swaps around the ordering of the callback parameters depending on the status code   Ugghhh   The best way to combat this is to call the  always chain method and do a bit of cleaning up   Here is my code     ajax                      always function data  textStatus  xhr            var responseCode   null          if  textStatus      error                    data variable is actually xhr             responseCode   data status              if  data responseText                    try                       data   JSON parse data responseText                     catch  e                           Ignore                                           else               responseCode   xhr status                     console log  Response code   responseCode           console log  JSON Data   data

User · Answer

this is possible with jQuery   ajax   method    ajax serverUrl       type  OutageViewModel Id      0    POST     PUT      data  dataToSave     statusCode          200  function  response             alert  1             AfterSavedAll                   201  function  response             alert  1             AfterSavedAll                   400  function  response             alert  1             bootbox alert   lt span style  color Red   gt Error While Saving Outage Entry Please Check lt  span gt    function                         404  function  response             alert  1             bootbox alert   lt span style  color Red   gt Error While Saving Outage Entry Please Check lt  span gt    function                        success  function            alert  1

User · Answer

ajax       url   http   my-ip test test php       data          error  function xhr  statusText  errorThrown  alert xhr status

[jquery] How do I get the HTTP status code with jQuery?

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