Example
In addition to .done, .fail and .always promise callbacks, which are triggered based on whether the request was successful or not, there is the option to trigger a function when a specific HTTP Status Code is returned from the server. This can be done using the statusCode parameter.
$.ajax({
type: {POST or GET or PUT etc.},
url: {server.url},
data: {someData: true},
statusCode: {
404: function(responseObject, textStatus, jqXHR) {
// No content found (404)
// This code will be executed if the server returns a 404 response
},
503: function(responseObject, textStatus, errorThrown) {
// Service Unavailable (503)
// This code will be executed if the server returns a 503 response
}
}
})
.done(function(data){
alert(data);
})
.fail(function(jqXHR, textStatus){
alert('Something went wrong: ' + textStatus);
})
.always(function(jqXHR, textStatus) {
alert('Ajax request was finished')
});
As official jQuery documentation states:
If the request is successful, the status code functions take the same parameters as the success callback; if it results in an error (including 3xx redirect), they take the same parameters as the
errorcallback.
