What are Angular.js services? How can you create and use services in an Angular.js application?
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AngularJS services are namely two, ‘service’ and ‘factory’. These services can be created by using the methods provided by AngularJS. This mainly aims to provide code reusability and modularity.
To create a service in an AngularJS application, you can use the ‘service’ or ‘factory’ methods.
Angular.js services are substitutable objects that are joined together using dependency injection(DI). They are singleton objects which gets initialized only once in a lifetime. These services have different methods which maintain the data throughout the lifetime of that application(it does not get refreshed and is having all time availability).
To create a service in Angular.js we have to follow some steps:
Step 1: Create an Angular.js project. There are 2 options for incorporating it: using a CDN, downloading and including the script file.
Step 2: Describe the offering. Make a new JavaScript file and use the module.factory method to specify our service.
Step 3: Implement and make use of the service. Put the dependency injection and use of the service in our controller or any other component where we want to use.
Step 4: We must include our scripts. Use <script>tag to add our JavaScript files in our HTML file.
The processes to use services in Angular.js are: