Book Image

Hands-on JavaScript for Python Developers

By : Sonyl Nagale
Book Image

Hands-on JavaScript for Python Developers

By: Sonyl Nagale

Overview of this book

Knowledge of Python is a great foundation for learning other languages. This book will help you advance in your software engineering career by leveraging your Python programming skills to learn JavaScript and apply its unique features not only for frontend web development but also for streamlining work on the backend. Starting with the basics of JavaScript, you’ll cover its syntax, its use in the browser, and its frameworks and libraries. From working with user interactions and ingesting data from APIs through to creating APIs with Node.js, this book will help you get up and running with JavaScript using hands-on exercises, code snippets, and detailed descriptions of JavaScript implementation and benefits. To understand the use of JavaScript in the backend, you’ll explore Node.js and discover how it communicates with databases. As you advance, you’ll get to grips with creating your own RESTful APIs and connecting the frontend and backend for holistic full-stack development knowledge. By the end of this Python JavaScript book, you’ll have the knowledge you need to write full-fledged web applications from start to finish. You’ll have also gained hands-on experience of working through several projects, which will help you advance in your career as a JavaScript developer.
Table of Contents (26 chapters)
Section 1 - What is JavaScript? What is it not?
Section 2 - Using JavaScript on the Front-End
Section 3 - The Back-End: Node.js vs. Python
Section 4 - Communicating with Databases


Data is at the heart of every program, and your JavaScript programs are no different:

  • JavaScript is loosely typed, which means variable types can mutate if needed.
  • Booleans are simple true/false statements.
  • Numbers are non-differentiated between integers, floats, or other types of numbers.
  • Arrays and sets can contain a lot of data and make organizing our data easier.
  • Objects are key-value pairs that efficiently store data for O(1) retrieval.
  • API calls are actually not that scary!

We've taken a closer look at data types, APIs, and JSON. What we've discovered is that data is very flexible in JavaScript, up to and including manipulating the prototypes of the objects themselves. Taking a look at JSON and APIs, we've successfully used fetch() to perform our first API calls.

In the next chapter, we'll dive further into writing JavaScript to make a more interesting application, as well as understanding the details of how to construct one!