AngularJS $httpParamSerializer Service

The AngularJS $httpParamSerializer service is a service that is used to serialize data into a URL-encoded string. It is commonly used with the AngularJS $http service to encode request parameters when making HTTP requests.

Syntax:

app.controller('myCtrl', function($scope, $http, $httpParamSerializer) {
  // Serialize an object into a URL-encoded string
  var serializedData = $httpParamSerializer({
    foo: 'bar',
    baz: 42
  });
});

Parameter: The AngularJS $httpParamSerializer function takes a single object as its parameter. 

Return value: It returns a URL-encoded string representation of the object.

Here is an example of using the $httpParamSerializer function:

app.controller('myCtrl', function($scope, $http, $httpParamSerializer) {
  // Serialize an object into a URL-encoded string
  var serializedData = $httpParamSerializer({
    foo: 'bar',
    baz: 42
  });
});

In this example, the $httpParamSerializer function is called with an object containing two properties: foo and baz. The function returns a URL-encoded string representation of the object, which might look something like this:

foo=bar&baz=42

Here is an example of using the $httpParamSerializer service to serialize data for an HTTP post request:

app.controller('myCtrl', function($scope, $http, $httpParamSerializer) {
  var data = {
    foo: 'bar',
    baz: 42
  };

  // Serialize the data into a URL-encoded string
  var serializedData = $httpParamSerializer(data);

  // Make the HTTP request
  $http.post('https://example.com/api', serializedData, {
    headers: {
      'Content-Type': 'application/x-www-form-urlencoded'
    }
  }).then(function(response) {
    // Success
  }, function(response) {
    // Error
  });
});

Here is an example of using the AngularJS $httpParamSerializer service to make an HTTP GET request with URL-encoded request parameters:

app.controller('myCtrl', function($scope, $http, $httpParamSerializer) {
  // Serialize the form data into a URL-encoded string
  var serializedData = $httpParamSerializer($scope.formData);

  // Make the HTTP request
  $http.get('https://example.com/api', {
    params: serializedData,
    headers: {
      'Content-Type': 'application/x-www-form-urlencoded'
    }
  }).then(function(response) {
    // Success
  }, function(response) {
    // Error
  });
});

Example 1: In this example, we have an AngularJS app with a single controller called mainCtrl. The mainCtrl controller has a scope function called submitForm which is called when the form is submitted. The submitForm function uses the $httpParamSerializer service to serialize the form data into a URL-encoded string and then uses the AngularJS $http service to make an HTTP POST request with the serialized data as the request body. The Content-Type header is set to application/x-www-form-urlencoded to indicate that the request body is URL-encoded.

Output:

 

Example 2: Here is an example of using the AngularJS $http service to send an HTTP POST request with an XML payload. Here, we define an AngularJS app and controller that uses the $http service to send an HTTP POST request with an XML payload. We create a scope variable called xmlData that holds the XML data. The XML data is sent in the request as the body data, and the ‘Content-Type’ header is set to ‘application/xml’ to indicate that the request contains XML data. The response is handled by the then method of the $http.post request, which logs the response in the browser’s console.

Output: