jQuery ajax调用放置数据

Question

$.ajax({

type: "PUT",
url: url,
data: data,
dataType: 'json',
success: function(data) {
  alert("success");


},
error: function(data) {
  var errors = data.responseJSON;
  console.log(errors);
}

})
});

the success event get triggered even though the post call fails (validation error), when does the error function get called?. what did i do wrong in that?

</div>

Answer 1

The required parameters in an Ajax error function are jqXHR, exception, use it like below :

  $.ajax({
    type: "PUT",
    url: url,
    data: data,
    dataType: 'json',
    success: function(data) {
        console.log(data);
    },
    error: function (jqXHR, exception) {
        console.log(jqXHR);
    }
  });