Learn AngularJS

Angular js services

  • Where can we implement the DOM manipulation in AngularJS?
    Manipulation of DOM is in directives and apart from this it should not exist in the controller’s services or anywhere else.
  • What is a representational state transfer(REST) in AngularJs?
    REST is an API style that operates over the HTTP request. The requested URL identifies the data to be operated on, and the HTTP method identifies the operation that is to be performed. REST is a style of API rather than a formal specification, and there is a lot of debate and disagreement about what is and isn’t RESTful, which is a term used to indicate an API that follows the REST style. AngularJS is flexible about how RESTful web services are consumed.
  • Define services in AngularJS.
    AngularJS services are the singleton objects or functions which are used for carrying out definite tasks. It embraces some corporate ideas and these purposes can be called controllers, directive, filters and so on.
  • Difference between services and factory.
    Factories are functions that return the object, while services are constructor functions of the object which is used by a new keyword. Syntax: Factory – module.factory(`factoryName`, function); Service – module.service(`serviceName`, function);
  • What is data binding in AngularJS?
    Automatic synchronization of data between the model and view components is referred to as data binding in AngularJS. There are two ways for data binding Data mining in classical template systems Data binding in angular templates
  • Explain services in AngularJS
    AngularJS services are the singleton objects or functions that are used for carrying out specific tasks. It holds some business logic.
  • Explain injector in AngularJS
    An injector is a service locator. It is used to retrieve object instances as defined by provider, instantiate types, invoke methods, and load modules. There is a single injector per Angular application, it helps to lookup an object instance by its name.
  • What is service method?
    Service method in AngularJS helps you to define service and method to it. In the following example, we have injected a simple addition service, which adds two numbers. Event Registration

    Guru99 Global Event

    Result: {{result}}

    var mainApp = angular.module("mainApp", []); mainApp.service('AdditionService', function(){ this.ADDITION = function(a,b) { return a+b; } }); mainApp.controller('DemoController', function($scope, AdditionService) { $scope.result = AdditionService.ADDITION(5,6); });
  • Name the AngularJS components that can be injected as dependency
    AngularJS components that can be injected as a dependency are: 1) value, 2) factory, 3) service, 4) provider, 5) constant.
  • What is the syntax of factory method in AngularJS?
    The syntax of Factory is as follows: app.factory('serviceName',function(){ return serviceObj;})
  • What is Authentication?
    The authentication is a service that is used to login and logout of Angular application. The credentials of users pass to API on the server. Then post server-side validation these credentials, JSON Web Token is returned, which as detail about the current user.
  • What is AngularJS module?
    In angularJS, a module is a process to group directives, and services components that are related. It arranges them in a way that they can mix with other modules to create an application.

Overview

What you will learn?

AngularJS has improved the entire picture of developing web-based apps and running the entire web market by offering a clear way to manage the code. It aims to fulfil the expectations of today’s generation developers who require fast performance and responsiveness for their web applications. If you want to become a  web developer? All you’ll need to learn how to use new frameworks on a daily basis. Angular Js is already famous among the developers. Even for single-page applications, the AngularJS framework generates rich interactive features for a real-time experience. It’s helpful to developers and has a supportive and active area.

What are the requirements?

  • Basic understanding of Programming
  • Basic concepts related to JS

What I am going to get from this course

  • Learn the Angularjs architecture
  • Develop elements, use directives, and work with data binding
  • Work with Service and Dependency Injection
  • Design and validate model-driven forms
  • Work with the Model-View-Controller (MVC)
  • Use HTTP with Observables, routing, and pipes
  • Use custom pipes and directives
  • Learn to Perform unit testing
  • Learn to Develop attractive UI using Bootstrap

Target Audience

  • Web developers
  • Web designer
  • Students who wish to learn UI development
  • UI developer
  • Full Stack web developer

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