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I have code like that

var ajaxrequest = $.ajax({
            type: "POST",
            dataType: "json",
            url: "xy.php", 
            data: {
                action : "read"
            }
            }).fail(function(){
                //something to do when ajaxreq fails
            }).done(function(data){

               //something to do when ajaxreq is done
            });

It is working no problem. My question is why this doesnt work:

var ajaxrequest = $.ajax({
            type: "POST",
            dataType: "json",
            url: "n3_vaje_api.php", //Relative or absolute path to response.php file
            data: {
                action : "read",
            },
            fail:function(){
                //something to do when ajaxreq fails
            },
            done:function(data){
              //something to do when ajaxreq is done
            }
        });

Fail and done are just examples, plete also doesnt work if used inside. But using it outside like:

ajaxrequestplete(f(){});

is working just fine... I know instead of done I should use success, but thats not my point here. Whats the deal here?

I have code like that

var ajaxrequest = $.ajax({
            type: "POST",
            dataType: "json",
            url: "xy.php", 
            data: {
                action : "read"
            }
            }).fail(function(){
                //something to do when ajaxreq fails
            }).done(function(data){

               //something to do when ajaxreq is done
            });

It is working no problem. My question is why this doesnt work:

var ajaxrequest = $.ajax({
            type: "POST",
            dataType: "json",
            url: "n3_vaje_api.php", //Relative or absolute path to response.php file
            data: {
                action : "read",
            },
            fail:function(){
                //something to do when ajaxreq fails
            },
            done:function(data){
              //something to do when ajaxreq is done
            }
        });

Fail and done are just examples, plete also doesnt work if used inside. But using it outside like:

ajaxrequest.plete(f(){});

is working just fine... I know instead of done I should use success, but thats not my point here. Whats the deal here?

  • javascript
  • jquery
  • ajax
  • request
Share Improve this question asked Jan 20, 2015 at 11:38 zmajericzmajeric 531 gold badge1 silver badge6 bronze badges 2
  • 1 you need to use success and error – Arun P Johny Commented Jan 20, 2015 at 11:45
  • dont forget to upvote and accept answer as it worked for you.. – Pranay Rana Commented Jan 20, 2015 at 14:40
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3 Answers 3

Reset to default 7

you need to use success and error is the method you need to use if you want to use your second option

this is example of ajax request without promise, where you are getting success and error function as parameter 

 $.ajax({url:"demo_test.txt"
      ,error : function (xhr,status,error)
        { //alert error}
      ,success:function(result){
      $("#div1").html(result);
    }});

In the first opetion you are using promise object return by ajax requst that is the reason you are getting done and fail method.

this is example of promise object , in below example request is promise object 

var request = $.ajax({
  url: "script.php",
  type: "POST",
  data: { id : menuId },
  dataType: "html"
});

request.done(function( msg ) {
  $( "#log" ).html( msg );
});

request.fail(function( jqXHR, textStatus ) {
  alert( "Request failed: " + textStatus );
});

Deprecation Notice: The jqXHR.success(), jqXHR.error(), and jqXHR.plete() callbacks are removed as of jQuery 3.0. You can use jqXHR.done(), jqXHR.fail(), and jqXHR.always() instead.

You could simply use $.post instead of $.ajax and json as the fourth argument.

$.post("n3_vaje_api.php", {action : "read"}, function(response) {
    // Do something with the request
}, 'json')
.done(function() {
    alert( "second success" );
  })
  .fail(function() {
    alert( "error" );
  })
  .always(function() {
    alert( "finished" );
});

本文标签： javascriptjQuery AJAX request eventsdone fail successStack Overflow

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