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Hands-on JavaScript for Python Developers

You're reading from   Hands-on JavaScript for Python Developers Leverage your Python knowledge to quickly learn JavaScript and advance your web development career

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Product type Paperback
Published in Sep 2020
Publisher Packt
ISBN-13 9781838648121
Length 410 pages
Edition 1st Edition
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Author (1):
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Sonyl Nagale Sonyl Nagale
Author Profile Icon Sonyl Nagale
Sonyl Nagale
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Table of Contents (26) Chapters Close

Preface 1. Section 1 - What is JavaScript? What is it not?
2. The Entrance of JavaScript into Mainstream Programming FREE CHAPTER 3. Can We Use JavaScript Server-Side? Sure! 4. Nitty-Gritty Grammar 5. Data and Your Friend, JSON 6. Section 2 - Using JavaScript on the Front-End
7. Hello World! and Beyond: Your First Application 8. The Document Object Model (DOM) 9. Events, Event-Driven Design, and APIs 10. Working with Frameworks and Libraries 11. Deciphering Error Messages and Performance Leaks 12. JavaScript, Ruler of the Frontend 13. Section 3 - The Back-End: Node.js vs. Python
14. What Is Node.js? 15. Node.js versus Python 16. Using Express 17. React with Django 18. Combining Node.js with the Frontend 19. Enter Webpack 20. Section 4 - Communicating with Databases
21. Security and Keys 22. Node.js and MongoDB 23. Putting It All Together 24. Assessments 25. Other Books You May Enjoy

Summary

Webpack is our friend. It modularizes, minifies, chunks, and makes our code more efficient, as well as warning us when certain pieces aren't properly optimized. There are ways to silence these alerts, but in general, it's a good idea to listen to them and at least try to resolve them.

One burning question, though, that remains unanswered: doesn't increasing the number of files downloaded increase the load time? This is a common misconception that's hung around from the early days of the web: more files == more load time. The fact is, however, that multiple browsers can open many non-blocking streams simultaneously, allowing for a more efficient download than one huge file. Is this a solution for all multiple files? No: a CSS image sprite, for example, is still a more efficient use of image resources. For performance, we must toe a fine line on how to provide the best user experience, while combining that with the best developer experience. Entire books are...

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