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Built-In And Custom AngularJS Services With Examples

  • For using $resource Service, you just need to add Angular-resource script file after AngularJS and dependency of ngResource into Angular module, as shown in the syntax given below.
  • Step 5

    The Service performs the work and return the status of the function, which is either successfully completed or rejected through deffered object to the client.

  • Promises are the pending results of the asynchronous calls and deferred objects returns promises and the results of asychronous operation after its completion to the calling code.The client sends asynchronous call to the Service.The Service receives the call and create a deferred object by using $q Service.The deferred object returns the promise to the client.The client uses this promise to write callback functions.The Service performs the work and return the status of the function, which is either successfully completed or rejected through deffered object to the client.The client executes success or an error callback function, which is based on the result return from the Service is used to cache the data.
  • This function takes two parameters, the name of the Service and an object literal, which represents the Service.
  • Some of the commonly used built-in Services are shown below.This Service is used to communicate with the Servers over the network; i.e., you can send raw requests like getting and posting the data etc., and to recieve the resposne from the remote Server through this Service.This type of Service is created at the configuration phase.The provider function takes two parameters, the name of Service and the function.

This article will demonstrate built-in as well creating your own custom AngularJS Services with examples on Plunker Editor.

@K0YCHEV: Built-In And Custom #AngularJS Services With Examples via @CsharpCorner #Angular…

This article will demonstrate built-in AngularJS Services as well as how you can create your own custom service in an AngularJS. This article begins with a brief introduction to AngularJS Services. Afterwards, it demonstrates built-in AngularJS Service with syntax and links to an example on Plunker Editor. Finally, the article discusses custom AngularJS Services.

$resource is used for the same purpose as $http Service but the key difference between them is that $resource is based on a RESTful architecture and is used to access Restful Web Services. For using $resource Service, you just need to add Angular-resource script file after AngularJS and dependency of ngResource into Angular module, as shown in the syntax given below.

$q service is used to handle the promises and the deferred objects. Promises are the pending results of the asynchronous calls and deferred objects returns promises and the results of asychronous operation after its completion to the calling code.

The Service receives the call and create a deferred object by using $q Service.

The deferred object returns the promise to the client.

The client uses this promise to write callback functions.

The Service performs the work and return the status of the function, which is either successfully completed or rejected through deffered object to the client.

$cacheFactory Service is used to cache the data. This Service provides functions through which you can define the capacity of the data objects or the items to be cached, get cache information, put and get the data from cache.

This type of Service is created at the configuration phase.The provider function takes two parameters, the name of Service and the function. The function must contain $get property and the value of this proerty is a function, which is used to create a Service.

The factory function takes two parameters, the name of the Service and the function, which creates and returns Service.

The constant funcion is used to define constant values for your Application. This function takes two parameters, the name of the Service and an object literal, which represents the Service.

Built-In And Custom AngularJS Services With Examples

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