Browse Library
Sign In Start Free Trial
Close icon Search icon
Account
Browse Library Sign In Start Free Trial

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying JavaScript Domain-Driven Design
  • Table Of Contents Toc
JavaScript Domain-Driven Design

JavaScript Domain-Driven Design

By : Philipp Fehre
3 (2)
Buy this Book
close
close
JavaScript Domain-Driven Design

JavaScript Domain-Driven Design

3 (2)
By: Philipp Fehre
Buy this Book

Overview of this book

If you are an experienced JavaScript developer who wants to improve the design of his or her applications, or find yourself in a situation to implement an application in an unfamiliar domain, this book is for you. Prior knowledge of JavaScript is required and prior experience with Node.js will also be helpful.
Table of Contents (10 chapters)
close
close
close
Preface
Icon
Preface
Icon
What this book covers
Icon
What you need for this book
Icon
Who this book is for
Icon
Conventions
Icon
Reader feedback
Icon
Customer support
Lock Free Chapter
1
1. A Typical JavaScript Project
Icon
1. A Typical JavaScript Project
Icon
The core idea of domain-driven design
Icon
Managing an orc dungeon
Icon
From greenfield to application
Icon
Another look at the problem
Icon
The concepts of domain-driven design
Icon
Further reading
Icon
Summary
2
2. Finding the Core Problem
Icon
2. Finding the Core Problem
Icon
Exploring a problem
Icon
Involving the experts
Icon
Identifying the hard problem
Icon
Getting started, it's about time
Icon
Summary
3
3. Setting Up a Project for Domain-driven Design
Icon
3. Setting Up a Project for Domain-driven Design
Icon
Structuring a project as we see it
Icon
Testing
Icon
Managing the build
Icon
Isolating the domain
Icon
Summary
4
4. Modeling the Actors
Icon
4. Modeling the Actors
Icon
The shoulders of giants
Icon
The Different approaches to development
Icon
Who is involved in the prisoner transfer?
Icon
Naming objects according to the domain
Icon
Objects first
Icon
Applying object design to the domain
Icon
Summary
5
5. Classification and Implementation
chevron up
Icon
5. Classification and Implementation
Icon
Building a common language
Icon
Value objects
Icon
Objects defined as entities
Icon
Managing the application's lifecycle
Icon
Services
Icon
Associations
Icon
Insight during implementation
Icon
Implementing language guidance
Icon
Building context
Icon
Summary
6
6. Context Map – The Big Picture
Icon
6. Context Map – The Big Picture
Icon
Don't fear the monolith
Icon
Service-oriented architecture and microservices
Icon
Keeping it all in your head
Icon
The different ways to manage contexts
Icon
Sharing knowledge
Icon
Summary
7
7. It's Not All Domain-driven Design
Icon
7. It's Not All Domain-driven Design
Icon
Matching the domain to the problem
Icon
The power of object-orientation
Icon
Influences to keep close
Icon
Domain-specific languages
Icon
Drawing knowledge
Icon
Further reading
Icon
Summary
8
8. Seeing It All Come Together
Icon
8. Seeing It All Come Together
Icon
The different kinds of JavaScript project
Icon
The different kinds of complexity
Icon
The domains suitable for domain-driven design
Icon
Further reading
Icon
Summary
9
Index
Icon
Index

Value objects

When dealing with objects in various languages, including JavaScript, objects are almost universally passed and compared by reference, which means that an object that is passed to a method does not get copied, but rather its pointer gets passed, and when two objects are compared, their pointers are compared. This is not how we think about objects and especially value objects, as we think of those as identical if their properties are identical. More importantly, we don't want to consider the inner implementation details when we consider things like equality. This has some implications for the function using the object; one important implication is that modifying the object will actually change it for everybody in the system, for example:

function iChangeThings(obj) {
  obj.thing = "changed"
}

obj = {}
obj.thing // => undefined
iChangeThings(obj)
obj.thing // => "changed"

Related to this is the fact that comparing does not always yield the expected...

CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
JavaScript Domain-Driven Design
End of Section 5
Next Section
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected
Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful
Order Page Read Now

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon