Search icon Close icon
Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases now! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required.

Change country

Modal Close icon
Country selected Country selected
country flag United States
Country selected
country flag United Kingdom
Country selected
country flag India
Country selected
country flag Germany
Country selected
country flag France
Country selected
country flag Canada
Country selected
country flag Russia
Country selected
country flag Spain
Country selected
country flag Brazil
Country selected
country flag Australia
Country selected
country flag Argentina
Country selected
country flag Austria
Country selected
country flag Belgium
Country selected
country flag Bulgaria
Country selected
country flag Chile
Country selected
country flag Colombia
Country selected
country flag Cyprus
Country selected
country flag Czechia
Country selected
country flag Denmark
Country selected
country flag Ecuador
Country selected
country flag Egypt
Country selected
country flag Estonia
Country selected
country flag Finland
Country selected
country flag Greece
Country selected
country flag Hungary
Country selected
country flag Indonesia
Country selected
country flag Ireland
Country selected
country flag Italy
Country selected
country flag Japan
Country selected
country flag Latvia
Country selected
country flag Lithuania
Country selected
country flag Luxembourg
Country selected
country flag Malaysia
Country selected
country flag Malta
Country selected
country flag Mexico
Country selected
country flag Netherlands
Country selected
country flag New Zealand
Country selected
country flag Norway
Country selected
country flag Philippines
Country selected
country flag Poland
Country selected
country flag Portugal
Country selected
country flag Romania
Country selected
country flag Singapore
Country selected
country flag Slovakia
Country selected
country flag Slovenia
Country selected
country flag South Africa
Country selected
country flag South Korea
Country selected
country flag Sweden
Country selected
country flag Switzerland
Country selected
country flag Taiwan
Country selected
country flag Thailand
Country selected
country flag Turkey
Country selected
country flag Ukraine
Country selected
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Home > Web Development > Front End Web Development > Angular Services
Angular Services
Angular Services

Angular Services: -

Arrow left icon
Profile Icon Sohail Salehi
Arrow right icon
€32.99
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2 (1 Ratings)
Paperback Feb 2017 294 pages 1st Edition
eBook
€17.99 €26.99
Paperback
€32.99
Subscription
Free Trial
Renews at €18.99p/m
Arrow left icon
Profile Icon Sohail Salehi
Arrow right icon
€32.99
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2 (1 Ratings)
Paperback Feb 2017 294 pages 1st Edition
eBook
€17.99 €26.99
Paperback
€32.99
Subscription
Free Trial
Renews at €18.99p/m
eBook
€17.99 €26.99
Paperback
€32.99
Subscription
Free Trial
Renews at €18.99p/m

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
Table of content icon View table of contents Preview book icon Preview Book

Angular Services

Chapter 2.  Introducing Wire-Frames

In this chapter, we are going to create all wire-frames for this project. Each wire-frame here is a simple component and a template with minimum code. We are not going to create major business logic here. There are just blueprints to clarify the road map for this project. So wire-frames are the very basic foundations for the business logic that we are going to create and the layout that we are going to show to the user.

As we discuss the wire-frames and later implement them in the chapters to come, we will walk through the eight fundamental concepts in Angular in this chapter. These concepts are:

  • Modules
  • Components
  • Templates
  • Metadata
  • Data Binding
  • Directive
  • Services
  • Dependency Injection

What is a module?

The short answer is: every class you create in Angular is a module. The contents of a module could be anything. It could be a component, a service, a simple piece of data, and even they could be a library of other modules. They might look different, but they share one purpose: modules bring (export) one piece of functionality to the Angular projects.

Note

Creating Angular projects in a modular fashion makes the testing and maintenance tasks easy and helps the scalability in the future. However, you are not limited to an Angular modular approach and you can use your own style.

Later in this chapter, we will see that there is an export keyword in front of each class keyword:

export class MyClassName{}

This is how Angular shares the logic inside that module (class) with the rest of the project. To use this module in other parts of a project, we just need to import it. Imagine the preceding code is saved inside a file named: myclassname.ts. To use that module in another module...

Components - the reusable objects

Components in Angular 2 are building blocks that address and provide solutions for different concerns in a web app. If we can solve one problem in one component, it means we can use that same component later in other parts of the current project or other projects. They are usually used to handle a part of a view (an HTML template). So if we create a component for a progress bar, we can use it later anywhere in the project where we need it. We can use components in other projects as well. For example, a component for a navigation bar that is created in one project, can be imported and be used in other projects in the future.

Components are basically nothing more than a class, with a bunch of methods, properties, and other usual codes. Inside the seed project that we set up in the previous chapter, open the src/app/about/about.ts file, and observe the code:

// src/app/about/about.ts 
import {Component} from '@angular/core'; 
@Component({ 
  selector...

The root component

In this book, we will have a couple of components and services that will work together to achieve a goal. But we need a root component to act as a communication center between all these players. This root component will control the application flow. Let's start by creating this component:

  1. Inside the WebStorm IDE, open the app.ts file, and notice the export line:
            export class AppComponent {}
  2. As we saw before, the export keyword simply indicates that we are willing to share this class with every other player in the project. In other words, if anyone needs this class, they just need to import it in their own body.
  3. The plan is to make the AppComponent class as the root component for our project, that is why we have the Component function imported from the Angular2 core module:
            import {Component} from 'angular2/core'; 
        export class Sherlock {}
  4. This code should be self...

Updating the Bootstrap file

Now before checking the results in the browser, there are a few updates that we need to do. First, open the app.modules.ts file inside the src/app folder and notice the import lines. The red color for the imported class means it does not exist:

        import {About} from './about/about';

That is right, because we removed all previous definitions in the seed project, so remove all troubled lines. That includes the following imports:

        import {About} from './about/about'; 
        import {Home} from './home/home'; 
        import {RepoBrowser} from './github/repo-browser/repo-browser'; 
        import {RepoList} from './github/repo-list/repo-list'; 
        import {RepoDetail} from './github/repo-detail/repo-detail';

Tip

Please notice that we don't need to mention...

What is a module?

The short answer is: every class you create in Angular is a module. The contents of a module could be anything. It could be a component, a service, a simple piece of data, and even they could be a library of other modules. They might look different, but they share one purpose: modules bring (export) one piece of functionality to the Angular projects.

Note

Creating Angular projects in a modular fashion makes the testing and maintenance tasks easy and helps the scalability in the future. However, you are not limited to an Angular modular approach and you can use your own style.

Later in this chapter, we will see that there is an export keyword in front of each class keyword:

export class MyClassName{}

This is how Angular shares the logic inside that module (class) with the rest of the project. To use this module in other parts of a project, we just need to import it. Imagine the preceding code is saved inside a file named: myclassname.ts. To use that module in another module...

Components - the reusable objects

Components in Angular 2 are building blocks that address and provide solutions for different concerns in a web app. If we can solve one problem in one component, it means we can use that same component later in other parts of the current project or other projects. They are usually used to handle a part of a view (an HTML template). So if we create a component for a progress bar, we can use it later anywhere in the project where we need it. We can use components in other projects as well. For example, a component for a navigation bar that is created in one project, can be imported and be used in other projects in the future.

Components are basically nothing more than a class, with a bunch of methods, properties, and other usual codes. Inside the seed project that we set up in the previous chapter, open the src/app/about/about.ts file, and observe the code:

// src/app/about/about.ts 
import {Component} from '@angular/core'; 
@Component({ 
  selector: 'about...

The root component

In this book, we will have a couple of components and services that will work together to achieve a goal. But we need a root component to act as a communication center between all these players. This root component will control the application flow. Let's start by creating this component:

  1. Inside the WebStorm IDE, open the app.ts file, and notice the export line:

            export class AppComponent {}

  2. As we saw before, the export keyword simply indicates that we are willing to share this class with every other player in the project. In other words, if anyone needs this class, they just need to import it in their own body.

  3. The plan is to make the AppComponent class as the root component for our project, that is why we have the Component function imported from the Angular2 core module:

            import {Component} from 'angular2/core'; 
        export class Sherlock {}

  4. This code should be self explanatory. Normally each import command has two main parameters. First we need to mention...

Updating the Bootstrap file

Now before checking the results in the browser, there are a few updates that we need to do. First, open the app.modules.ts file inside the src/app folder and notice the import lines. The red color for the imported class means it does not exist:

        import {About} from './about/about';

That is right, because we removed all previous definitions in the seed project, so remove all troubled lines. That includes the following imports:

        import {About} from './about/about'; 
        import {Home} from './home/home'; 
        import {RepoBrowser} from './github/repo-browser/repo-browser'; 
        import {RepoList} from './github/repo-list/repo-list'; 
        import {RepoDetail} from './github/repo-detail/repo-detail';

Tip

Please notice that we don't need to mention the extension (.ts) for the file we are importing.

When you do so, the 'Declarations' start to complain. So remove all missing elements from that line, too. After all of these changes, the app.modules...

Running the web server

To see these updates in the browser, first run the web server in the background. Open a new terminal window - or use the embedded terminal in WebStorm IDE - and run the following command:

$ npm run server

It will take a few moments to build the app in the background and run the web server. Once the web server is up and running, open a browser window and visit the http://localhost:3000 .

Now if you inspect the code inside the browser, you will notice the new <app> tag in the page

Bootstrapping versus root component

You might ask why we need a bootstrap file to load the root component? Couldn't we have the root component in charge of loading everything itself? The answer is yes, we could. But, the good thing about having a bootstrap is better isolation, and as a result, better separation of concerns. Look at all those JavaScript files included in the index.html and compare it to the contents of app.html:

# index.html 
<!DOCTYPE html> 
<html> 
  <head> 
    <!-- head contents --> 
  </head> 
  <body> 
    <app> 
      Loading... 
    </app> 
    <script src="polyfills.bundle.js"></script> 
    <script src="vendor.bundle.js"></script> 
    <script src="app.bundle.js"></script> 
  </body> 
</html>  
 
# app/app.html 
<h1>The Sherlock Project</h1>

Having a bootstrap in a project gives us more flexibility on the environmental and the browser settings and leaves the...

The big picture

Now that we have the root component in place, we can add all wire-frames for this project:

The Sherlock Project 
|- Collector 
|- Rating 
|- Notifier 
|- Evidence 
|- AI 
|- Report 
|- Autopilot 
'- Accuracy

Each wire-frame introduced here represents one of the chapters for the remainder of this book. They will have different functionality, UI, inputs and outputs, but they will have one thing in common. The root Component - AppComponent - connects them all together and will be in charge of loading and navigating through the appropriate page.

Please keep in mind that what we will create here is just a simple blueprint for coming chapters, that's why we call them wire-frame. As we go through each chapter, we will take each of these wire-frames and enhance them by adding proper services, data, templates, and so on.

The navigation system

Before continuing to implement wire-frames, let's put the navigation system in place. For now we are going to create a navigation bar with options for Chapters 3 to 10. However, you might have noticed that Chapter 5, The Notifier Service – Creating Cron Jobs in Angular, needs a different type of UI and putting it inside a menu item doesn't make sense. That makes perfect sense, but for now we tend to keep things as simple as possible. The objective for assigning each chapter to a menu item is for easier demonstration only. Once we have all components, services, and their functionality in place, we can review the whole UI and modify it to a better one.

The Angular router module

All routing features in Angular 2 are available inside the angular2/router module. So if we load it inside the bootstrap-er we can access all of those features through any component in this project. The Angular 2 seed project has already provided the required configurations and we don't need to do anything. But to see how it is done, let's checkout the index.html file and follow the references over there. Open the index.html and notice the JavaScript files included there:

# index.html 
    <script src="polyfills.bundle.js"></script> 
    <script src="vendor.bundle.js"></script> 
    <script src="app.bundle.js"></script>

The files we are interested in are vendor.bundle.js and app.bundle.js. It seems that they should be at the same place where index.html exists, but there is no sign of them.

We talked about what is happening here in Chapter 1,Setting Up the Environment. As a reminder, please keep in mind that .ts files should be...

The collector wire-frame

This application is about investigating articles and news and finding the truth about them. So as the very first step we need to find them. The Collector's task is to fetch original news or articles from the given sources and organize them based on our desired format. The news/articles source could be anything. It could be a plain URL, an XML file, or simply a keyword which we can search to find related news. That means the user interface for the Collector will contain a couple of input boxes to enter a URL, RSS feeds or trending keywords, and a submit button.

Depending on the entry, we need a logic (we will see it will be a service) which processes the request, fetches the contents, figures out the title, body, the news source and the URL for each content, and saves them into a database table for future usage. The following diagram describes the work-flow in the Collector:

The collector component

Looking at the preceding diagram, it indicates that we need a component...

Accessing a component via root

In order to use the collector component inside the root component (app.ts) we need to inform the root about it. So declare the CollectorComponent inside the app.modules.ts.

Tip

Notice that as soon as you add the CollectorComponent in the declarations array, WebStorm IDE imports the related class automatically.

If you are not using WebStorm, you need to manually import the collector.component.ts into the root otherwise you will get an error later:

// src/app/app.ts 
//... 
import {CollectorComponent}from "./collector/collector.component"; 
//...

Also don't forget to declare the new component in the module file:

// src/app/app.modue.ts 
import {CollectorComponent} from "./collector/collector.component"; 
//... 
@NgModule({ 
  declarations: [AppComponent, NavigationComponent, CollectorComponent], 
  //... 
}) 
export class AppModule { 
}

Now that we have the Collector component imported, we have access to its selector. To prove that, edit the app.html as follows...

Left arrow icon

Page 1 of 22

Right arrow icon
Download code icon Download Code

Key benefits

  • - Leverage the latest Angular and ES2016 features to create services
  • - Integrate third-party libraries effectively and extend your app’s functionalities
  • - Implement a real-world case study from scratch and level up your Angular skills

Description

A primary concern with modern day applications is that they need to be dynamic, and for that, data access from the server side, data authentication, and security are very important. Angular leverages its services to create such state-of-the-art dynamic applications. This book will help you create and design customized services, integrate them into your applications, import third-party plugins, and make your apps perform better and faster. This book starts with a basic rundown on how you can create your own Angular development environment compatible with v2 and v4. You will then use Bootstrap and Angular UI components to create pages. You will also understand how to use controllers to collect data and populate them into NG UIs. Later, you will then create a rating service to evaluate entries and assign a score to them. Next, you will create "cron jobs" in NG. We will then create a crawler service to find all relevant resources regarding a selected headline and generate reports on it. Finally, you will create a service to manage accuracy and provide feedback about troubled areas in the app created. This book is up to date for the 2.4 release and is compatible with the 4.0 release as well, and it does not have any code based on the beta or release candidates.

Who is this book for?

If you are a JavaScript developer who is moving on to Angular and have some experience in developing applications, then this book is for you. You need not have any knowledge of on Angular or its services.

What you will learn

  • Things you will learn:
  • • Explore various features and topics
  • involved in modules, services, and
  • dependency injection
  • • Sketch and create wire-frames for
  • your project
  • • Use controllers to collect data and
  • populate them into NG UIs
  • • Create a controller and the required
  • directives to build a tree data
  • structure
  • • Implement a logic to decide the
  • relevancy of any given evidence
  • • Create a partially-AI service
  • • Build controllers to set the template
  • for the report
  • • Collect, investigate, perform decision making,
  • and generate reports in one
  • the big automated process
Estimated delivery fee Deliver to Bulgaria

Premium delivery 7 - 10 business days

€25.95
(Includes tracking information)

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Feb 24, 2017
Length: 294 pages
Edition : 1st
Language : English
ISBN-13 : 9781785882616
Vendor :
Google
Category :
Web Development
Languages :
JavaScript
Concepts :
Front End Web Development
Tools :
Angular

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
Estimated delivery fee Deliver to Bulgaria

Premium delivery 7 - 10 business days

€25.95
(Includes tracking information)

Product Details

Publication date : Feb 24, 2017
Length: 294 pages
Edition : 1st
Language : English
ISBN-13 : 9781785882616
Vendor :
Google
Category :
Web Development
Languages :
JavaScript
Concepts :
Front End Web Development
Tools :
Angular

Packt Subscriptions

See our plans and pricing
Modal Close icon
€18.99 billed monthly
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Simple pricing, no contract
START FREE TRIAL
BUY NOW
€189.99 billed annually
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts
START FREE TRIAL
BUY NOW
€264.99 billed in 18 months
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts
START FREE TRIAL
BUY NOW

Frequently bought together

Angular Services
Angular Services
Read more
Feb 2017 294 pages
Full star icon 2 (1)
eBook
eBook
  • eBook eBook €17.99
  • Paperback Paperback €32.99
€17.99 €26.99
€32.99
Angular 2 Cookbook
Angular 2 Cookbook
Read more
Jan 2017 464 pages
Full star icon 4.2 (24)
eBook
eBook
  • eBook eBook €22.99
  • Paperback Paperback €41.99
€22.99 €32.99
€41.99
Stars icon
Total € 74.98
Angular Services
€32.99
Angular 2 Cookbook
€41.99
Total € 74.98 Stars icon

Table of Contents

8 Chapters
1. Setting Up the Environment Chevron down icon Chevron up icon
1. Setting Up the Environment
Introducing Angular
There is no backward compatibility
Previous knowledge of AngularJS 1.x is not necessary
The relationship between ECMAScript, AtScript, and TypeScript
Setting up tools and getting started!
Setting up the seed project
Setting up an Angular project in WebStorm
Frontend developers versus backend developers
Introducing The Sherlock Project
Summary
2. Introducing Wire-Frames Chevron down icon Chevron up icon
2. Introducing Wire-Frames
What is a module?
Components - the reusable objects
The root component
Updating the Bootstrap file
Running the web server
Bootstrapping versus root component
The big picture
The navigation system
The Angular router module
The collector wire-frame
Accessing a component via root
The rating wire-frame
The notifier wire-frame
Updating the navigation system
Switching to SPA
The Evidence Tree Builder Wire-frame
The AI Wire-frame
The Report Generator Wire-frame
The Auto-pilot Wire-frame
The Accuracy Manager Wire-frame
Summary
3. The Collector Service - Using Controllers to Collect Data Chevron down icon Chevron up icon
3. The Collector Service - Using Controllers to Collect Data
What is a service and why do we need them?
Updating the collector component
The collector service
The Dependency Injection
Property binding
Class binding
Style binding
Event binding
Getting the real news
Angular and observable objects
Updating the collector component
Saving objects in a database
Setting up The Sherlock Project on Firebase
Saving objects to the database
Working with data via lists
Summary
4. The Rating Service - Data Management Chevron down icon Chevron up icon
4. The Rating Service - Data Management
Setting the ranking parameters
The Google Trends service
The rating service structure
The rating logic structure
The rating component
The rating template
Creating a custom pipe
Summary
5. The Notifier Service - Creating Cron Jobs in Angular Chevron down icon Chevron up icon
5. The Notifier Service - Creating Cron Jobs in Angular
Cron job versus Interval/Timeout
Introducing node-cron
Getting and rating the news periodically
The Notifier component
The Notifier service
Automating tasks with Zappier
In App notifications
News maintenance
Summary
6. The Evidence Tree Builder Service - Implementing the Business Logic Chevron down icon Chevron up icon
6. The Evidence Tree Builder Service - Implementing the Business Logic
Clustering and similarity - retrieving documents of interest
The evidence service
The evidence component
The evidence template
Understanding the bag of words model
Corpus - how to build the body
The Corpus functions
Introducing the Google Custom Search Engine
Updating the component and the service
How to choose a subject for a road test
How can we live On Mars?
Getting insights via clustering
Data visualization
Processing the network graph data
Decorating a network graph
Processing custom events
Summary
7. The Report Generator Service - Creating Controllers to Set Report Template Chevron down icon Chevron up icon
7. The Report Generator Service - Creating Controllers to Set Report Template
Saving network graph data to the database
The report generator component
The report generator template
Creating new report templates
Updating the report template
Deleting The Report Template
Rendering The Reports
Printing the report
Summary
8. The Accuracy Manager Service - Putting It All Together Chevron down icon Chevron up icon
8. The Accuracy Manager Service - Putting It All Together
Introducing the anatomy of cure and prevention
Why are test frameworks not practical here?
The accuracy manager component
The accuracy manager view
The accuracy service
Summary

Recommendations for you

Left arrow icon
React and React Native
React and React Native
Read more
Apr 2024 508 pages
Full star icon 4.3 (9)
eBook
eBook
  • eBook eBook €17.99
  • Paperback Paperback €22.99
€17.99 €26.99
€22.99 €32.99
Django 5 for the Impatient
Django 5 for the Impatient
Read more
Sep 2024 228 pages
Full star icon 4 (2)
eBook
eBook
  • eBook eBook €13.99
  • Paperback Paperback €17.99
€13.99 €20.99
€17.99 €26.99
Django 5 By Example
Django 5 By Example
Read more
Apr 2024 820 pages
Full star icon 4.5 (35)
eBook
eBook
  • eBook eBook €17.98
  • Paperback Paperback €21.99
€17.98 €29.99
€21.99 €37.99
​AI Strategies for Web Development
​AI Strategies for Web Development
Read more
Sep 2024 458 pages
eBook
eBook
  • eBook eBook €15.99
  • Paperback Paperback €28.99
€15.99 €22.99
€28.99
Mastering Angular Test-Driven Development
Mastering Angular Test-Driven Development
Read more
Oct 2024 246 pages
Full star icon 5 (1)
eBook
eBook
  • eBook eBook €15.99
  • Paperback Paperback €28.99
€15.99 €22.99
€28.99
GraphQL Best Practices
GraphQL Best Practices
Read more
Oct 2024 422 pages
eBook
eBook
  • eBook eBook €15.99
  • Paperback Paperback €29.99
€15.99 €23.99
€29.99
C# 12 and .NET 8 – Modern Cross-Platform Development Fundamentals
C# 12 and .NET 8 – Modern Cross-Platform Development Fundamentals
Read more
Nov 2023 828 pages
Full star icon 4.4 (72)
eBook
eBook
  • eBook eBook €20.98
  • Paperback Paperback €37.99
€20.98 €29.99
€37.99
Building Python Microservices with FastAPI
Building Python Microservices with FastAPI
Read more
Aug 2022 420 pages
Full star icon 3.9 (9)
eBook
eBook
  • eBook eBook €19.99
  • Paperback Paperback €35.99
€19.99 €28.99
€35.99
Building Production-Grade Web Applications with Supabase
Building Production-Grade Web Applications with Supabase
Read more
Aug 2024 534 pages
Full star icon 4.3 (8)
eBook
eBook
  • eBook eBook €15.99
  • Paperback Paperback €20.98
€15.99 €23.99
€20.98 €29.99
Responsive Web Design with HTML5 and CSS
Responsive Web Design with HTML5 and CSS
Read more
Sep 2022 498 pages
Full star icon 4.5 (57)
eBook
eBook
  • eBook eBook €17.99
  • Paperback Paperback €33.99
€17.99 €26.99
€33.99
Right arrow icon

Customer reviews

Rating distribution
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
(1 Ratings)
5 star 0%
4 star 0%
3 star 0%
2 star 100%
1 star 0%
Amazon Customer Apr 04, 2017
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
I am truely confuse. In chapter Components - the reusable objects, it ask me to delete all directories and files inside app/ folder. Then for the next couple chapters, it wants to look at files inside app. Where do I get those files from ????
Amazon Verified review Amazon

People who bought this also bought

Left arrow icon
Building Python Microservices with FastAPI
Building Python Microservices with FastAPI
Read more
Aug 2022 420 pages
Full star icon 3.9 (9)
eBook
eBook
  • eBook eBook €19.99
  • Paperback Paperback €35.99
€19.99 €28.99
€35.99
React and React Native
React and React Native
Read more
May 2022 606 pages
Full star icon 4.6 (17)
eBook
eBook
  • eBook eBook €20.98
  • Paperback Paperback €37.99
€20.98 €29.99
€37.99
Responsive Web Design with HTML5 and CSS
Responsive Web Design with HTML5 and CSS
Read more
Sep 2022 498 pages
Full star icon 4.5 (57)
eBook
eBook
  • eBook eBook €17.99
  • Paperback Paperback €33.99
€17.99 €26.99
€33.99
C# 12 and .NET 8 – Modern Cross-Platform Development Fundamentals
C# 12 and .NET 8 – Modern Cross-Platform Development Fundamentals
Read more
Nov 2023 828 pages
Full star icon 4.4 (72)
eBook
eBook
  • eBook eBook €20.98
  • Paperback Paperback €37.99
€20.98 €29.99
€37.99
C# 11 and .NET 7 – Modern Cross-Platform Development Fundamentals
C# 11 and .NET 7 – Modern Cross-Platform Development Fundamentals
Read more
Nov 2022 818 pages
Full star icon 4.1 (54)
eBook
eBook
  • eBook eBook €20.98
  • Paperback Paperback €25.99
€20.98 €29.99
€25.99 €37.99
Right arrow icon

About the author

Profile icon Sohail Salehi
Sohail Salehi
Sohail Salehi is a veteran developer who recently decided to become a data scientist. He believes when you look at a programming challenge from a data scientist perspective, things started to change slightly and what used to be the ultimate solution, somehow morphs into a stepping stone for what really matters--data. He won't lay down some tests and codes as soon as a programming challenge is handed to him, rather he has started to think WHY do we need to gather data, WHAT potential value is hidden inside this data and HOW to convert this potential into value that will make business thrive. Although he has written a couple of other programming books before, The Sherlock Project is his first attempt to look at the programming challenge from a different perspective. This story is about discovering hidden values inside data and it is the project that he discusses in this book, Angular Services. In the past decade, he worked on some interesting projects with teams of bright developers. But challenges such as handling the traffic for a national newspaper website (NZ Herald) or creating a new game for Lotto (Lotto - 2nd Chance) are not attractive to him anymore. After he got his first certificate in Machine Learning from University of Washington, he decided to combine his development skills with new concepts that he is discovering in his new professional life and provide creative solutions for daily data-related challenges. Technical concepts are not his only passion. He is an avid traveler and an adventurous surfer. Currently he lives in Bali, where the big waves are roaring most of the year, and he benefits from the rich Balinese culture and stunning tropical nature, which brings out the best of himself.
Read more
See other products by Sohail Salehi
Get free access to Packt library with over 7500+ books and video courses for 7 days!
Start Free Trial

FAQs

What is the delivery time and cost of print book? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela
What is custom duty/charge? Chevron down icon Chevron up icon

Customs duty are charges levied on goods when they cross international borders. It is a tax that is imposed on imported goods. These duties are charged by special authorities and bodies created by local governments and are meant to protect local industries, economies, and businesses.

Do I have to pay customs charges for the print book order? Chevron down icon Chevron up icon

The orders shipped to the countries that are listed under EU27 will not bear custom charges. They are paid by Packt as part of the order.

List of EU27 countries: www.gov.uk/eu-eea:

A custom duty or localized taxes may be applicable on the shipment and would be charged by the recipient country outside of the EU27 which should be paid by the customer and these duties are not included in the shipping charges been charged on the order.

How do I know my custom duty charges? Chevron down icon Chevron up icon

The amount of duty payable varies greatly depending on the imported goods, the country of origin and several other factors like the total invoice amount or dimensions like weight, and other such criteria applicable in your country.

For example:

  • If you live in Mexico, and the declared value of your ordered items is over $ 50, for you to receive a package, you will have to pay additional import tax of 19% which will be $ 9.50 to the courier service.
  • Whereas if you live in Turkey, and the declared value of your ordered items is over € 22, for you to receive a package, you will have to pay additional import tax of 18% which will be € 3.96 to the courier service.
How can I cancel my order? Chevron down icon Chevron up icon

Cancellation Policy for Published Printed Books:

You can cancel any order within 1 hour of placing the order. Simply contact customercare@packt.com with your order details or payment transaction id. If your order has already started the shipment process, we will do our best to stop it. However, if it is already on the way to you then when you receive it, you can contact us at customercare@packt.com using the returns and refund process.

Please understand that Packt Publishing cannot provide refunds or cancel any order except for the cases described in our Return Policy (i.e. Packt Publishing agrees to replace your printed book because it arrives damaged or material defect in book), Packt Publishing will not accept returns.

What is your returns and refunds policy? Chevron down icon Chevron up icon

Return Policy:

We want you to be happy with your purchase from Packtpub.com. We will not hassle you with returning print books to us. If the print book you receive from us is incorrect, damaged, doesn't work or is unacceptably late, please contact Customer Relations Team on customercare@packt.com with the order number and issue details as explained below:

  1. If you ordered (eBook, Video or Print Book) incorrectly or accidentally, please contact Customer Relations Team on customercare@packt.com within one hour of placing the order and we will replace/refund you the item cost.
  2. Sadly, if your eBook or Video file is faulty or a fault occurs during the eBook or Video being made available to you, i.e. during download then you should contact Customer Relations Team within 14 days of purchase on customercare@packt.com who will be able to resolve this issue for you.
  3. You will have a choice of replacement or refund of the problem items.(damaged, defective or incorrect)
  4. Once Customer Care Team confirms that you will be refunded, you should receive the refund within 10 to 12 working days.
  5. If you are only requesting a refund of one book from a multiple order, then we will refund you the appropriate single item.
  6. Where the items were shipped under a free shipping offer, there will be no shipping costs to refund.

On the off chance your printed book arrives damaged, with book material defect, contact our Customer Relation Team on customercare@packt.com within 14 days of receipt of the book with appropriate evidence of damage and we will work with you to secure a replacement copy, if necessary. Please note that each printed book you order from us is individually made by Packt's professional book-printing partner which is on a print-on-demand basis.

What tax is charged? Chevron down icon Chevron up icon

Currently, no tax is charged on the purchase of any print book (subject to change based on the laws and regulations). A localized VAT fee is charged only to our European and UK customers on eBooks, Video and subscriptions that they buy. GST is charged to Indian customers for eBooks and video purchases.

What payment methods can I use? Chevron down icon Chevron up icon

You can pay with the following card types:

  1. Visa Debit
  2. Visa Credit
  3. MasterCard
  4. PayPal
What is the delivery time and cost of print books? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela