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

Grammar rules

Just like with any other programming language, JavaScript has grammar rules that are to be followed in order for the computer to understand what our code is trying to tell it. These rules are fairly straightforward and range from capitalizing and punctuating your code, which enhances the readability, to using specific structures within your code and avoiding common words that can confuse meaning. The rules of JavaScript syntax are fairly simple and straightforward; they include the following:

  • Capitalization
  • Reserved words
  • Variable syntax
  • Data types
  • Logic structures
  • Functions
  • Punctuation

Capitalization counts

As with most programming languages, capitalization makes a difference. The myNode and mynode variables will be interpreted as completely different variables. That is, the computer will absolutely see the relationship between myNode and mynode because they are capitalized differently.

Reserved words

There are a good number of words reserved in JavaScript that cannot...