Book Image

Essential Angular

By : Victor Savkin, Jeff Cross
Book Image

Essential Angular

By: Victor Savkin, Jeff Cross

Overview of this book

Essential Angular is a concise, complete overview of the key aspects of Angular, written by two Angular core contributors. The book covers the framework's mental model, its API, and the design principles behind it. This book is fully up to date with the latest release of Angular. Essential Angular gives you a strong foundation in the core Angular technology. It will help you put all the concepts into the right places so you will have a good understanding of why the framework is the way it is. Read this book after you have toyed around with the framework, but before you embark on writing your first serious Angular application. This book covers concepts such as the differences between Just-In-Time (JIT) and Ahead-Of-Time (AOT) compilation in Angular, alongside NgModules, components and directives. It also goes into detail on Dependency Injection and Change Detection: essential skills for Angular developers to master. The book finishes with a look at testing, and how to integrate different testing methodologies in your Angular code.
Table of Contents (11 chapters)

Why templates?

Before we jump into how, let's talk about why.

Using templates is aligned with the rule of least power, which is a useful design principle.

the less powerful the language, the more you can do with the data stored in that language. [...] I chose HTML not to be a programming language because I wanted different programs to do different things with it: present it differently, extract tables of contents, index it, and so on.

Tim Berners-Lee, on the Principle of Least Power

For the full article refer https://www.w3.org/DesignIssues/Principles.html#PLP

Because templates are pure HTML, and hence are constrained, tools and developers can make smart assumptions about what components are and how they behave, and Angular can do a lot of interesting things that would have not been possible if components used JavaScript instead. Let's...