What Are Services in AngularJS?In AngularJS you can make your own service, or use one of the many built-in services.
In AngularJS, a service is a function, or object, that is available for, or limited to, your AngularJS application. AngularJS Services are substitutable objects that are wired together using dependency injection (DI). You can use services to organize and share code across your app.
When to use Services in AngularJS?We can use AngularJS services when we want to create things that act as an application interface. It can be used for all those purposes for which constructor is used.
Types of AngularJS ServicesThere are two types of services in AngularJS:
1. Built-In Services: There are approximately 30 built-in services in angular.
2. Custom Services: In Angular if the user wants to create its own service, he/she can do so.
Why use Services in AngularJS?Writing your own service is a great way to implement reusable code and they are the perfect place to capture the logic specific to your application.
Below are its uses:
1. To share data between controllers, Services will fetch data from the database, and if we store the data inside a controller, once we change to another controller the data will be discarded. If we keep the data inside Service, that will be accessible for all the controllers.
2. It is used to organize and share data and functions across the application.
3. It provides a method to keep data across the lifetime of the angular application.
4. We can divide our application into multiple different types of components which AngularJS can inject into each other. This will make it easier to reuse, configure, and test the components in our application.
How to Create and Register AngularJS Services?An AngularJS Service can be created or registered in three different ways:
1. Factory method
2. Service method
3. Provider method
Using Modules factory API, we can create service. We can use a factory method to create an object, properties add to it, and return the same object.
We can use a new keyword to instantiate it, an instance of the function will pass by service. The instance of an object is the service object. AnguarJS registers service object. Here, we can inject this object into various other components of angular application like controller, directives, services, filters, etc.
We can pass only $provider into the .config function. It uses $get function to return value. It will use before making a service available you want to provide module-wise configuration for the service object.
AngularJS Service v/s FactoryService and factory both are singletons.
AngularJS .Service is like a constructor while .factory is a method that returns a value.
AngularJS .factory() provides us much more power and flexibility, whereas a .service() is the “end result” of a .factory() call.
Dependencies in ServicesLike you declare dependencies in a controller, similarly, you can declare dependencies in AngularJS services too. We can declare the dependency in service by specifying them in a factory function signature of service.
We conclude that AngularJS services are a chunk of code that one can re-use to perform a specific task. There are number of services provided by angular for various tasks and you can create your own services too.
If you have any queries related to AngularJS installation, Contact us today and we will be happy to give you a free consultation tailored to your requirements.
You may also like to know Why Angular is Developer’s Delight?!
What Oditek offers
Refer our Skills page:
We had a tough deadline to launch our .Net based application that processes a lot of data, and got very frustrated with our development agency we hired. Fortunately we got Oditek, and they took over seamlessly the product development, launched the app & continued feature development. Just awesome!
They were very attentive to our needs as clients and went out of the way to make sure our projects were taken care of. They were always able to get projects done in the specifications we requested. They are passionate about getting things done; I would definitely recommend them to lead any IT projects.
OdiTek has been very impressive in delivering a C++ based network security product migration from Linux to Windows. Honestly, we didn’t expect the speed and competencies to get the migration project delivered absolutely on time as the existing product was complex. Technically team is very experienced.
I worked with OdiTek on few high profile banking application projects. They did a fantastic job with web applications & manual testing on the VAS apps for two leading banks of UK that included rigorous UAT phases. I recommend them for any application development where security matters.
OdiTek is our extended team who works on our key software projects. They are dependable, good in collaboration and technically very much to the level what we expect a global team should be. They had transformed our web applications, CRM and added mobility to existing business platforms here.
It's been more than 4 years now that we are working with OdiTek on our cloud based web product development. It's been amazing working together, they are very competent on designing scalable, high performance apps. Their technical support is outstanding to say the least, even at odd hours.
I am a fan of Team OdiTek since 2014 and have worked on many product development projects together. Specially worth mentioning their deliveries on VAS Banking web application development & manual testing services for Smarta, UK. They are highly skilled & a professional team to work with.
OdiTek has been working on our Integrated Web-scale Mobile Platform i.e. Optimal Health since 2014. They are very professional and takes care of the requirements meticulously. They are technically very sound and sincere in ensuring quality & performance. Wonderful working with them!
You can trust the team, with minimum supervision you get the work done. They are honest, professional & committed to schedule & quality. I had been successfully running 3 business applications designed, developed and maintained by Oditek developers. It’s been a pleasure working with them.
OdiTek has been working in custom software development, including services for test automation. Many of them have worked with me in 2009-10 when I was R&D Manager in NetHawk India. They have great enthusiasm & a passion to excel in bringing customer success. Their work has been very impressive.
It's amazing to see these guys are turning their experience into a global delivery excellence at OdiTek. I am sure their past large scale product development experience will be handy to product companies. I would always recommend Oditek for software development, especially performance-driven solutions.