Gain insights into building reactive websites with RxJS. Delve into mastering observables and managing events efficiently to create fast, responsive applications while reducing bugs.

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The list of requirements for frontend work keeps increasing. Websites that load quickly on shaky connections, render perfectly on mobile devices, and respond with lightning speed to user input are expected. All of these tasks require dealing with a high number of events from disparate sources, be it your Customer Relationship Management (CRM), late-breaking news, or just a chat room.

Observables is a new way of thinking about managing these events, even when they may occur sometime in the future.

In this course, you’ll learn how to delegate both the calls and control flow to RxJS, allowing you to focus on the rest of your application.

RxJS compartmentalizes eventing flows, encapsulating each action in a single function, providing many helper operators that keep an internal state, allowing you to outsource your state worries to the library.

By the end of this course, you will be able to build bigger, faster, and less-buggy applications for your users.

Build Reactive Websites with RxJS: Master Observables and Wrangle

# Operator and `.pipe` method
An **operator** is a tool provided by RxJS that allows you to manipulate the data in the observable as it streams through. 

You can import operators from `'rxjs/operators'`. To use an **operator**, pass it into the `.pipe` method of an observable. 

Here, the fictional `exampleOperator` is used for illustration:
```JS 
import { interval } from 'rxjs';
import { exampleOperator } from 'rxjs/operators'; 
interval(100) 
 .pipe( 
   exampleOperator() 
);
``` 
> <span style="font-size: 1.5em">💡</span>  In previous versions of RxJS, operators were methods attached directly to the observable. This made it difficult for bundling tools like Webpack to determine which operators weren’t needed in the production bundle. With RxJS v6, only needed operators are imported, allowing a bundler to ignore the rest, resulting in a smaller bundle. 



# Operator and `.pipe` method
An **operator** is a tool provided by RxJS that allows you to manipulate the data in the observable as it streams through. 

You can import operators from `'rxjs/operators'`. To use an **operator**, pass it into the `.pipe` method of an observable. 

Here, the fictional `exampleOperator` is used for illustration:
```JS 
import { interval } from 'rxjs';
import { exampleOperator } from 'rxjs/operators'; 
interval(100) 
 .pipe( 
   exampleOperator() 
);
``` 
> <span>💡</span>  In previous versions of RxJS, operators were methods attached directly to the observable. This made it difficult for bundling tools like Webpack to determine which operators weren’t needed in the production bundle. With RxJS v6, only needed operators are imported, allowing a bundler to ignore the rest, resulting in a smaller bundle. 



Let's see how you can use an operator in the pipe() method to manipulate data in the observable stream.

Course Introduction

Creating Observables

Manipulating Streams

Managing Asynchronous Events

Advanced Async

Multiplexing Observables

Using HTTP in Angular

Building Reactive Forms in Angular

Advanced Angular

Reactive Game Development

Piping Data Through Operators

Operator and `.pipe` method

Piping Data Through Operators

Operator and .pipe method

Operator and `.pipe` method