Advanced Angular 12 Programming

Outline

Chapter 1. Advanced Component Concepts

• Detecting Change to @Input Binding
• Example Child and Parent Components
• Using a Custom Setter
• Using ngOnChanges
• Advanced Inter Component Communication
• Direct Access to Child
• Using a Template Local Variable
• Using the @ViewChild Decorator
• Static and Dynamic Children with @ViewChild
• More About @ViewChild
• The @ViewChildren Decorator
• Live Monitoring of Children
• Direct Access to the Parent Component
• Communication Using Subject API
• Creating a Subject
• Publishing a Message in a Subject
• Subscribing to the Subject
• Problem With Ordering
• Content Projection
• Setup Projection Using ng-content
• Supplying Template for ng-content
• The Host Element
• Static Styling of the Host Element
• Setting DOM Properties of the Host
• Dynamically Loading a Component
• Dynamic Loading Example
• HostComponent Code
• Setting entryComponents
• Optimizing Change Detection
• Example Excessive Template Execution
• Using OnPush Change Detection Strategy
• Properly Changing @Input Variables
• Additional Notes on OnPush
• Summary

Chapter 2. Advanced RxJS

• Observable Creator Functions
• Subscribing to DOM Events
• The interval Function
• forkJoin and zip Function
• The concat Function
• The merge Function
• Recap of Operators
• The debounceTime Operator
• The distinct Operator
• The delay Operator
• The reduce Operator
• The mergeMap Operator
• The switchMap Operator
• The retryWhen Operator
• Basic Example of retryWhen
• Retry for a Finite Time
• Creating a Custom Operator
• Advanced Example Custom Operator
• Intercepting All HTTP Calls
• Example Interceptor Service
• Registering the Interceptor
• Summary

Chapter 3. Custom Attribute Directive

• Recapping Attribute Directives
• Ways to Manipulate the Host Element
• Binding to the DOM Properties of the Host
• Listening for Host Events
• Obtaining the DOM Event Object
• Accessing the Host Component
• Adding @Input to a Directive
• Summary

Chapter 4. Custom Structural Directive

• How Do Structural Directives Work?
• Commonly Used API
• A Very Simple Conditional Directive
• Using the Sample Directive
• Passing Context Data to the Template
• Example Looping Directive
• Using the Looping Directive
• Summary

Chapter 5. Custom Validators

• Validator for Reactive Forms
• Example Validator Function
• Using the Validator
• Passing Data to Validator Function
• Validator for Template Driven Forms
• Example Validator Directive
• Using the Validator Directive
• Asynchronous Validator
• Example Asynchronous Validator Function
• Using the Validation Function
• Asynchronous Validator Directive
• Optimizing Asynchronous Validation
• Summary

Chapter 6. Distributing Angular Libraries

• Introduction
• About Workspace and Project
• Creating a Library Project
• Anatomy of a Library Project
• Create a Component in the Library
• Create a Service in the Library
• Building the Library
• Distributing the Library
• Using the Library from an Application
• Using the Library Artifacts
• Writing a Sample Application
• Summary

Chapter 7. Internationalization (I18N)

• Introduction to I18N
• What Angular Provides
• Add @angular/localize Package
• Translatable Text
• Extract Translatable Text
• Example XLIFF File
• Providing Translation
• Configure the Build System
• Building the Application
• Deploying the Application
• Custom Translation Unit ID
• Getting the Current Locale
• Translatable Attribute Text
• Summary

Chapter 8. Security in Angular Applications

• Overview of Authentication and Authorization
• About Identity Token
• Exchanging the Identity Token
• Example Login Code in Angular Service
• Options for Saving the Identity Token
• Sending the Token to Server
• Obtaining User Information
• Cross Site Scripting (XSS) Attack
• Angular and XSS
• Sanitizing Content
• Trusting HTML Content
• Cross-Site Request Forgery (XSRF)
• Preventing XSRF Using a Token
• Summary

Lab Exercises

• Lab 1. Advanced Inter Component Communication
• Lab 2. Advanced Component Techniques
• Lab 3. Using the Subject API
• Lab 4. HTTP Client Warmup Exercise
• Lab 5. Advanced RxJS
• Lab 6. Developing a Custom Attribute Directive
• Lab 7. Develop Custom Validators
• Lab 8. Creating Angular Library
• Lab 9. Using Angular Library
• Lab 10. Angular Security – Authentication
• Lab 11. Angular Security - Authorization