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Learn ECMAScript

You're reading from   Learn ECMAScript Discover the latest ECMAScript features in order to write cleaner code and learn the fundamentals of JavaScript

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Product type Paperback
Published in Feb 2018
Publisher
ISBN-13 9781788620062
Length 298 pages
Edition 2nd Edition
Languages
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Authors (2):
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Narayan Prusty Narayan Prusty
Author Profile Icon Narayan Prusty
Narayan Prusty
MEHUL MOHAN MEHUL MOHAN
Author Profile Icon MEHUL MOHAN
MEHUL MOHAN
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Toc

Table of Contents (14) Chapters Close

Preface 1. Getting Started with ECMAScript FREE CHAPTER 2. Knowing Your Library 3. Using Iterators 4. Asynchronous Programming 5. Modular Programming 6. Implementing the Reflect API 7. Proxies 8. Classes 9. JavaScript on the Web 10. Storage APIs in JavaScript 11. Web and Service Workers 12. Shared Memory and Atomics 13. Other Books You May Enjoy

HyperText Transfer Protocol (HTTP)


HTTP is a stateless protocol. A stateless protocol means that there is no state being stored on the server, which, in turn, means that the server forgets everything once it has sent a response to the client. Consider the following situation:

You've typed http://example.com in your browser. When your request hits the server, the server is aware of your IP address, your requested page, and any other headers associated with your HTTP request. It fetches the content from the filesystem or database, sends the response to you, and then forgets about it.

Upon every new HTTP request, the client and server interact as if they're meeting for the first time. So, doesn't that mean our earlier Facebook example is true in the real world as well?

Essentially, that is the case. All websites use cookies for authentication purposes, which is a way to fake the statefulness of a protocol. Remove cookies from every request and you will be able to see the raw, stateless HTTP protocol...

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