How can I retrieve the name of an HTTP status code using JavaScript and AngularJS?

Question

How can I retrieve the name of an HTTP status code using JavaScript and AngularJS?

My web application is built using AngularJS, JS, JQ, HTML5, and CSS3. It interacts with our projects' REST API by sending various HTTP methods and manipulating the data received. The functionality is similar to what can be achieved with DHC by Restlet (formerly Dev HTTP Client). Each request made results in a status code such as 200, 201, 404, or 500, which is then shown to the user.

I am looking to enhance the user experience by not only displaying the response code but also providing a description alongside it:

404 Not Found, 201 Created, etc.

Currently, I am handling responses in AngularJS like this:

$http(config).success(function (data, status, headers, config) {//some logic}

Is there a way to achieve this using AngularJS?

javascript angularjs http dhc

Answer 1

Answer №1

After some thought, I devised the following solution:

I established a fixed variable and compiled a comprehensive list of HTTP codes along with their corresponding descriptions (you are welcome to replicate this in your own program):

constants.js:

var HTTP_STATUS_CODES = {
       'CODE_200' : 'OK',
       'CODE_201' : 'Created',
       'CODE_202' : 'Accepted',
       ...
    };

Subsequently, in my AngularJS controller, upon receiving a status from $http, I simply invoke this function to assign the message value of the status code to a model:

setResponseCodeDescr = function(responseCode) {

var responseCodeConstant = 'CODE_'.concat(responseCode);

if (HTTP_STATUS_CODES[responseCodeConstant]){
    $rootScope.response.description = HTTP_STATUS_CODES[responseCodeConstant];
} else {
    $rootScope.response.description = "";
}

}

That sums it up :)

Answer 2

After some thought, I devised the following solution:

I established a fixed variable and compiled a comprehensive list of HTTP codes along with their corresponding descriptions (you are welcome to replicate this in your own program):

constants.js:

var HTTP_STATUS_CODES = {
       'CODE_200' : 'OK',
       'CODE_201' : 'Created',
       'CODE_202' : 'Accepted',
       ...
    };

Subsequently, in my AngularJS controller, upon receiving a status from $http, I simply invoke this function to assign the message value of the status code to a model:

setResponseCodeDescr = function(responseCode) {

var responseCodeConstant = 'CODE_'.concat(responseCode);

if (HTTP_STATUS_CODES[responseCodeConstant]){
    $rootScope.response.description = HTTP_STATUS_CODES[responseCodeConstant];
} else {
    $rootScope.response.description = "";
}

}

That sums it up :)

Answer 3

Answer №2

When using Angular to make a call, the status code is returned along with the status variable in the success function. However, Angular does not provide the corresponding text message for the status code.

One way to handle this is by creating a switch statement to display the appropriate message for each code, but this can quickly become cumbersome for all possible codes. Another approach is to include the desired message as part of the data returned from the backend, shifting the responsibility from the front end to the backend.

To efficiently translate the code into a message, consider implementing a directive (or filter) that can be reused throughout your application. This directive can take a code and return the corresponding message to display in the user interface.

Answer 4

When using Angular to make a call, the status code is returned along with the status variable in the success function. However, Angular does not provide the corresponding text message for the status code.

One way to handle this is by creating a switch statement to display the appropriate message for each code, but this can quickly become cumbersome for all possible codes. Another approach is to include the desired message as part of the data returned from the backend, shifting the responsibility from the front end to the backend.

To efficiently translate the code into a message, consider implementing a directive (or filter) that can be reused throughout your application. This directive can take a code and return the corresponding message to display in the user interface.

Answer 5

Answer №3

Following the advice of "amenoire/Jason C", I would create constants without using the prefix "CODE_".

var HTTP_STATUS_CODES = {
        '200' : 'OK',
        '201' : 'Created'
...
        '505' : 'HTTP Version Not Supported'
};

The constants can be called like this:

var s =  HTTP_STATUS_CODES[xmlhttp.status]
if (!(s && s.length > 0)) s = 'look at https://developer.mozilla.org/en-US/docs/Web/HTTP/Status'

Answer 6

Following the advice of "amenoire/Jason C", I would create constants without using the prefix "CODE_".

var HTTP_STATUS_CODES = {
        '200' : 'OK',
        '201' : 'Created'
...
        '505' : 'HTTP Version Not Supported'
};

The constants can be called like this:

var s =  HTTP_STATUS_CODES[xmlhttp.status]
if (!(s && s.length > 0)) s = 'look at https://developer.mozilla.org/en-US/docs/Web/HTTP/Status'

Answer 7

Answer №4

It is possible to continue using jQuery ajax for your request, along with setting up the response using $.ajaxSetup in the following manner:

$.ajaxSetup({
    type: "GET",
    dataType: "jsonp",
    error: function(xhr, exception){
        if( xhr.status === 0)
            alert('Error : ' + xhr.status + 'You are not connected.');
        else if( xhr.status == "201")
            alert('Error : ' + xhr.status + '\nServer error.');
        else if( xhr.status == "404")
            alert('Error : ' + xhr.status + '\nPage note found');
        else if( xhr.status == "500")
             alert('Internal Server Error [500].');
        else if (exception === 'parsererror') 
            alert('Error : ' + xhr.status + '\nImpossible to parse result.');
        else if (exception === 'timeout')
            alert('Error : ' + xhr.status + '\nRequest timeout.');
        else
            alert('Error .\n' + xhr.responseText);
    }
});

Answer 8

It is possible to continue using jQuery ajax for your request, along with setting up the response using $.ajaxSetup in the following manner:

$.ajaxSetup({
    type: "GET",
    dataType: "jsonp",
    error: function(xhr, exception){
        if( xhr.status === 0)
            alert('Error : ' + xhr.status + 'You are not connected.');
        else if( xhr.status == "201")
            alert('Error : ' + xhr.status + '\nServer error.');
        else if( xhr.status == "404")
            alert('Error : ' + xhr.status + '\nPage note found');
        else if( xhr.status == "500")
             alert('Internal Server Error [500].');
        else if (exception === 'parsererror') 
            alert('Error : ' + xhr.status + '\nImpossible to parse result.');
        else if (exception === 'timeout')
            alert('Error : ' + xhr.status + '\nRequest timeout.');
        else
            alert('Error .\n' + xhr.responseText);
    }
});

Answer 9

Answer №5

When it comes to extracting code, it may seem straightforward at first glance. "Simply accessing the predefined properties of the response will provide you with the necessary information,"

The documentation actually covers this topic well. Once you have gathered the response and its associated properties, the possibilities are endless. Another approach is to establish a constant, although in most cases this may not be necessary.

$http({
    method: 'GET',
    url: '/someOtherUrl'
}).then(function successCallback(response) {
    var status = response.code;
    console.log(status); // displays the code 200/401
    var statusText = response.statusText;
    console.log(statusText); // retrieves the HTTP status text from the response
}, function errorCallback(response) {

});

Answer 10

When it comes to extracting code, it may seem straightforward at first glance. "Simply accessing the predefined properties of the response will provide you with the necessary information,"

The documentation actually covers this topic well. Once you have gathered the response and its associated properties, the possibilities are endless. Another approach is to establish a constant, although in most cases this may not be necessary.

$http({
    method: 'GET',
    url: '/someOtherUrl'
}).then(function successCallback(response) {
    var status = response.code;
    console.log(status); // displays the code 200/401
    var statusText = response.statusText;
    console.log(statusText); // retrieves the HTTP status text from the response
}, function errorCallback(response) {

});

How can I retrieve the name of an HTTP status code using JavaScript and AngularJS?

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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