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

The scaffold: Using express-generator

To get started, we'll need to get on our command-line interface (CLI) again. If you remember Chapter 2, Can We Use JavaScript Server-Side? Sure!, we took a look at Node and npm on the command line. Let's check our version again so we can make a few decisions about our application. On your command line, run node -v. If you have v8.2.0 or greater, you have the option of using npx to install certain packages that are designed to be run only once in the lifespan of a project, such as express-generator. However, if you have a lower version, you can use npm to install one-time-use packages as well as packages that are used in your project.

We'll move forward with npx in this chapter, so if you need to take a quick look at the documentation for npm versus npx, be sure to give yourself some time to do that. In essence, to use npm for one-time packages that shouldn't live inside your code base, for example, a scaffolding tool such as an...