How to read response headers in angularjs?

Question

My server returns this kind of header: Content-Range:0-10/0:

I tried to read this header in angular with no luck:

var promise = $http.get(url, {
    params: query
}).then(function(response) {
  console.log(response.headers());
  return response.data;
});

which just prints

Object {content-type: "application/json; charset=utf-8"}

Any ideas how to access the content range header?

Solution 1

Use the headers variable in success and error callbacks

From documentation.

$http.get('/someUrl').
  success(function(data, status, headers, config) {
    // this callback will be called asynchronously
    // when the response is available
  })
  .error(function(data, status, headers, config) {
    // called asynchronously if an error occurs
    // or server returns response with an error status.
  });

If you are on the same domain, you should be able to retrieve the response headers back. If cross-domain, you will need to add Access-Control-Expose-Headers header on the server.

Access-Control-Expose-Headers: content-type, cache, ...

Solution 2

Why not simply try this:

var promise = $http.get(url, {
    params: query
}).then(function(response) {
  console.log('Content-Range: ' + response.headers('Content-Range'));
  return response.data;
});

Especially if you want to return the promise so it could be a part of a promises chain.

Solution 3

Updated based on Muhammad's answer...

$http.get('/someUrl').
  success(function(data, status, headers, config) {
    // this callback will be called asynchronously
    // when the response is available
    console.log(headers()['Content-Range']);
  })
  .error(function(data, status, headers, config) {
    // called asynchronously if an error occurs
    // or server returns response with an error status.
  });

Solution 4

Additionally to Eugene Retunsky's answer, quoting from $http documentation regarding the response:

The response object has these properties:

• data – {string|Object} – The response body transformed with the transform functions.

• status – {number} – HTTP status code of the response.

• headers – {function([headerName])} – Header getter function.

• config – {Object} – The configuration object that was used to generate the request.

• statusText – {string} – HTTP status text of the response.

Please note that the argument callback order for $resource (v1.6) is not the same as above:

Success callback is called with (value (Object|Array), responseHeaders (Function), status (number), statusText (string)) arguments, where the value is the populated resource instance or collection object. The error callback is called with (httpResponse) argument.

Solution 5

response.headers();

will give you all the headers (defaulat & customs). worked for me !!

Note . I tested on the same domain only. We may need to add Access-Control-Expose-Headers header on the server for cross domain.

View more solutions