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Essential Angular

You're reading from   Essential Angular Fast paced guide to Front-end web development with Angular

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Product type Book
Published in May 2017
Publisher Packt
ISBN-13 9781788293761
Pages 108 pages
Edition 1st Edition
Languages
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Authors (3):
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Narwhal Technologies Inc Narwhal Technologies Inc
Author Profile Icon Narwhal Technologies Inc
Narwhal Technologies Inc
Jeff Cross Jeff Cross
Author Profile Icon Jeff Cross
Jeff Cross
Victor Savkin Victor Savkin
Author Profile Icon Victor Savkin
Victor Savkin
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Toc

Reactive Programming in Angular

Reactive programming in the core framework

An Angular application is a reactive system. The user clicks on a button, the application reacts to this event and updates the model. The model gets updated, the application propagates the changes through the component tree.

Angular implements these two arrows very differently. Let's explore why.

Events and state

To understand why Angular uses two very different ways of reactive programming, we need to look at the differences between events and the state.

We often talk about events or event streams when discussing reactivity. Event streams are an important category of reactive objects, but so is state. So let's compare their properties.

Events are discrete and cannot be skipped. Every single event matters, including the order in which the events are emitted. The "most recent event" is not a special thing we care about...

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