Passing Data with AngularJS $http GET Requests

In AngularJS, the $http service is used to make HTTP requests to a server. When making a GET request, it’s often necessary to pass data to the server as part of the request. In this tutorial, we’ll explore how to pass data with AngularJS $http GET requests.

Understanding HTTP GET Requests

HTTP GET requests are used to retrieve data from a server. Unlike POST requests, which can send data in the request body, GET requests typically don’t have a request body. However, you can still pass data to the server using query parameters or headers.

Passing Data as Query Parameters

One way to pass data with an AngularJS $http GET request is by using query parameters. You can add a params object to the $http.get() method’s configuration object. The params object should contain key-value pairs, where each key is a parameter name and each value is the corresponding parameter value.

Here’s an example:

$http({
  url: 'https://example.com/api/data',
  method: 'GET',
  params: {
    userId: 123,
    pageSize: 10
  }
});

In this example, the $http.get() method will make a GET request to https://example.com/api/data?userId=123&pageSize=10.

Passing Data as Headers

Another way to pass data with an AngularJS $http GET request is by using headers. You can add a headers object to the $http.get() method’s configuration object. The headers object should contain key-value pairs, where each key is a header name and each value is the corresponding header value.

Here’s an example:

$http({
  url: 'https://example.com/api/data',
  method: 'GET',
  headers: {
    'Authorization': 'Bearer YOUR_TOKEN'
  }
});

In this example, the $http.get() method will make a GET request to https://example.com/api/data with an Authorization header containing the token.

Using the $http.get() Method

You can also use the $http.get() method directly, passing in the URL and configuration object as arguments. Here’s an example:

$http.get('https://example.com/api/data', {
  params: {
    userId: 123,
    pageSize: 10
  },
  headers: {
    'Authorization': 'Bearer YOUR_TOKEN'
  }
});

This will make a GET request to https://example.com/api/data?userId=123&pageSize=10 with an Authorization header containing the token.

Adding Parameters to the URL

As an alternative, you can add parameters directly to the URL string. Here’s an example:

$http.get('https://example.com/api/data?userId=123&pageSize=10');

This will make a GET request to https://example.com/api/data?userId=123&pageSize=10.

Conclusion

In this tutorial, we’ve explored how to pass data with AngularJS $http GET requests. We’ve covered passing data as query parameters, headers, and adding parameters directly to the URL string. By using these techniques, you can easily make HTTP GET requests with AngularJS and pass data to your server.