In this chapter you will take your first steps as a React developer. When you reach the end you will have a first version of a microblogging application running on your computer!

The JavaScript language has evolved significantly in the last few years, but because browsers have been slow in adopting these changes a lot of people have not kept up with the language. React encourages developers to use modern JavaScript, so this chapter gives you an overview of the newest features of the language.

Welcome to the React Mega-Tutorial! In this series I will share my experience in developing real-world, non-trivial front end applications using the React library and a handful of related packages.

Unlike most other books and tutorials, the React Mega-Tutorial will take you on a development journey. Instead of teaching you React concepts with isolated examples, it will show you how to develop a complete front end application. You will begin by creating a brand new React project, and then start adding features and functionality to it as you progress through the chapters. When you reach the end, you will have a complete project of which you will understand every single line of code. More importantly, you will understand the concepts and techniques involved in creating it, in way that will be directly applicable to your own projects.

When you compare Python and JavaScript async code, you may think they are very much alike, since both use the async/await pattern. In reality, there is a significant difference between the two, which in my opinion, makes the JavaScript async model superior to Python's.

Do you want to know what the difference is, and how to make async Python work like async JavaScript? Watch or read on for the details!

This is the fourth article in my series about working with a combined Flask and React project. In this part I'm going to cover how to deploy the application in Docker containers.

The video below contains a complete 90 minute Socket.IO course using Python and JavaScript.

This is the list of chapters, each with a link to the code for each part of the tutorial:

Below you can watch my complete "Quick React Tutorial" video series. The entire seven-part series runs for about 93 minutes and will give you a fairly complete overview of the core features of the React framework.

Below you can see the list of parts in the series, each with a link to the code for that part of the tutorial:

This is the third article in my "React + Flask" series, in which I discuss applications that combine a Flask API server with a React single-page application. This time I'm going to show you how to work with the popular React-Router library for React, and in particular how this library affects the production deployment of the application.

This is the third article in my "React + Flask" series. Make sure you read the first and second parts, as this part builds on the project built up to this point.

After I published the tutorial on JavaScript Promises, several people told me that they did not know the new arrow function syntax introduced in the ES6 version of the language.

In this article I'll give you an overview of this syntax, along with information on what platforms support it and how to use them even in older platforms.

The use of callback functions is so common in JavaScript that often you find that in the callback from one asynchronous operation the only option that you have is to start another. In many cases you end up having a long chain of callbacks within callbacks, a situation that is appropriately referenced as callback hell.

Modern JavaScript has introduced the concept of Promises to better deal with asynchronous notifications and prevent callback hell. In this article I'm going to show how to work with libraries based on promises, how to use promises in your own functions, and how to upgrade callback-based functions to promises.