Javascript Programming Tutorials, Guides & Best Practices

In this example, the count variable is private to the counter function. The only way to manipulate count is through the returned function, which forms a closure over the count variable.

2. Creating Factory Functions

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In this tutorial, we will learn how to build a modern web application using React and Redux. React is a popular JavaScript library for building user interfaces, while Redux is a predictable state container that helps manage application state. We'll cover the basics of setting up a React project, integrating Redux, and implementing a simple application to demonstrate these tools.

Before starting this tutorial, you should have a basic understanding of JavaScript and familiarity with the command line. Additionally, ensure you have Node.js and npm (Node Package Manager) installed on your machine.