AngularJS | AJAX - $http

AngularJS is a JavaScript framework that allows developers to create dynamic and interactive web applications. One of the key features of AngularJS is its ability to handle AJAX requests using the $http service.

What is AJAX?

AJAX stands for Asynchronous JavaScript And XML. It is a technique used to create dynamic, asynchronous web applications without the need to reload the entire page. With AJAX, you can make requests to the server and retrieve data without refreshing the entire page, resulting in a better user experience.

What is $http?

AngularJS provides a built-in service called $http that simplifies making AJAX requests in your application. The $http service allows you to make GET, POST, PUT, DELETE, and other types of requests to the server.

Here's an example of how to use the $http service to make a GET request:

$http.get('/api/users').then(function(response) {
  // handle success
  console.log(response.data);
}, function(response) {
  // handle error
  console.log(response.status);
});

In this code snippet, we make a GET request to the "/api/users" endpoint and use the then() method to handle the response. The then() method takes two functions as arguments - a success function and an error function. If the request is successful, the success function is called, and if there is an error, the error function is called.

Making POST Requests with $http

In addition to making GET requests, the $http service can also be used to make POST requests. Here's an example of how to make a POST request using $http:

$http.post('/api/users', {name: 'John Doe', email: 'john@example.com'}).then(function(response) {
  // handle success
  console.log(response.data);
}, function(response) {
  // handle error
  console.log(response.status);
});

In this code snippet, we make a POST request to the "/api/users" endpoint with some data in the request body. We use the post() method instead of the get() method to make the request.

Conclusion

In this article, we've seen how to make AJAX requests using the $http service in AngularJS. The $http service simplifies making requests to the server and handling responses in your AngularJS application. With this knowledge, you should be able to create dynamic and interactive web applications that make use of AJAX requests.