How do you run react js code on your local?

Have you ever wanted to run React js code on your local machine? Are you having difficulty understanding how to do it? What tools and resources will you need to successfully execute React js code? These are all important questions to consider when trying to understand how to run React js code on your local machine.
To begin, it is essential to understand why running React js code on a local machine is beneficial. According to the journal Frontiers in Neuroscience, running React js code on a local machine allows the user to have a hands-on experience with the testing and development of software, and to tweak the product to their needs. Additionally, TechTarget states that with code running on a local machine, the user receives feedback from testing and modifications much faster and with more precision. This allows developers to have a greater understanding of their code and leads to the development of a more efficient product.
In this article, you will learn the steps for setting up a local environment to run React js code, including the tools and resources needed, and how to set it up. Additionally, this article will discuss how to debug the code if a problem arises, and how to verify the React js code to ensure its successful operation. All these topics and more will be discussed in detail so that readers are able to go through the steps in order to run React js code on their local machine.Definitions
React.js is an open-source JavaScript library, maintained by Facebook and the community, which is used for creating user interfaces and building user interfaces for single page or mobile applications. It was initially released in 2013, and today, it’s used by websites like Instagram, Netflix, Walmart, and others. Local in this context means your computer.
Running React.js code on your local computer means that you can code and develop your website or application using React without having to host it online or use a server. To do this, you will need a text editor, like Sublime or Visual Studio Code, and the Node.js runtime environment. Once you have these setup, you can create a React app using the npx command, which will give you a barebones project to start coding with. Once your react app is setup, you can initialize it using npm start, which will launch a development server and open the React app in your browser. From here, you can write code and change the app accordingly. This is a great way to learn React and build a working application without needing a web server.

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Heading 1: Setup Development Environment

Heading 1: Setup Development Environment
The essential step for any React development is setting up a proper development environment on the local machine. To do this, the following programs are required: a code editor, a browser, and the Node.js runtime.

Code editor

A text editor that is specialized for code editing is needed to write the React code. Popular examples include Visual Studio Code, Atom (by GitHub) and Sublime Text. All of these editors have plugins and indentation settings that improve the development experience, so it is best to choose one and familiarize oneself with it.


A modern browser is essential for running the React web application. Popular options include Mozilla Firefox, Google Chrome, Safari and Microsoft Edge. It is also recommended to install a browser debugging tools such as the React Developer Tools offered by Google Chrome.


Node.js is a server-side version of JavaScript and is most essential for React development. It needs to be installed on the local machine in order for React to function properly. Node.js can be installed from and also comes with an official package manager called npm (Node.js Package Manager) that allows for the installation of additional packages.


  • It is important to set up local development environment before writing any React code.
  • A code editor, browser and Node.js are essential components of the development environment.
  • The code editor should have plugins/indentation settings that facilitate React development.
  • A modern browser such as Google Chrome with debugging tools such as the React Developer Tools should also be used.
  • Node.js should be installed and the npm package manager should also be used.

Heading 2: Executing React Code

Running React code on a local machine requires the installation of certain tools in the development environment. To begin with, Node.js should be installed, as React heavily depends on it. After that, a package manager such as npm or yarn should be installed to install React and other packages.

Creating an HTML structure

Once the environment is ready, the next step is to create an HTML structure with a div block. React needs an element on the page to target for rendering its application components and UI. In the HTML file, one should create an HTML skeleton mentioning doctype, HTML, head and body tags for setting up the skeleton of the page.

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Setting up the React App

In order to setup the React App, some code and a library should be included on the page. The code from CDN is the quickest and easy way to import React libraries. In the React script, the element should be specified where the React application should get rendered.
Finally, the react code can be written in a seperate file and can be imported to the application. At the end, the application should be started in a browser window. Using the React developer tools, one can analyze the behavior of the react components. To sum up, running React Code on the local machine does require certain setup steps and tools, but the process is pretty straightforward and easy.

Heading 3: Debugging React Code

To comprehensively debug React code, there are a few methods and tools available. This article explains those tools and methods so developers can quickly and efficiently troubleshoot React code to identify and resolve errors.

1. Utilize Issue-specific Software

Much issue specific software exist to alleviate React-specific debugging. Debugging React code and determining the source of a problem can be accomplished through React developer tools, including React’s own dev tool, as well as other popular tools such as Immer and the React Performance Profiler. These tools provide developers with deep insight into code components like their properties and state, and allow for live debugging.

2. Use Console Methods

For some non-issue specific issues, developers can find console methods useful for debugging. Specifically, console.log(),, console.table(), console error() can each be used to print, group, list, and throw errors from particular React components. This allows developers to trace errors back to their source and identify and fix them.

3. Inspect Properties & State

It can also be beneficial to inspect and debug the properties and state of React components to determine where an issue may be stemming from. Developers can do this by using React dev tools, as well as utilizing the Chrome DevTools Elements tab. This tool allows developers to inspect a React’s HTML/DOM Elements, and access the codebehind any Node in the DOM, thus streamlining the debugging process and helping to identify the source of the problem.

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Thought-provoking question: How can we leverage ReactJS to create truly revolutionary web experiences?
As web developers and designers, we constantly need to be aware of the newest technologies and trends to best serve our clients and the everyday users. ReactJS is a powerful JavaScript library that allows developers to tackle complicated projects effectively. We urge readers to stay tuned and to follow our blog in order to stay up to date with the latest industry standards and React developments.
When working with ReactJS there can be many questions that arise along the process. With this in mind, we have formulated the following Frequently Asked Questions (FAQ) section to aid the process.
Q: How do I get started with ReactJS?
A: The first step is to familiarize yourself with the fundamentals of React. Then investigate the possibilities to maximize the potential of the library. Once you have a good understanding and overview, you can start coding.
Q: What platforms is ReactJS compatible with?
A: ReactJS is a JavaScript library and therefore mainly used in web applications. However, it can also be used to build mobile apps for Android and iOS with the help of a few additional libraries.
Q: What are the performance gains by using ReactJS?
A: ReactJS enables developers to build data-intensive web applications with incredible performance gains by using optimized, declarative components and virtual DOM. Additionally, it increases performance through server-side rendering and code splitting.
Q: Are there any dedicated tools to help with the development of React projects?
A: Yes, the most widely used tool is the create-react-app. It is a technical starter kit with all the necessary tools for React development. It includes Webpack, Babel, ESLint and more.
Q: Is ReactJS suitable for e-commerce websites?
A: Absolutely, ReactJS is well suited for creating complex e-commerce websites. Allowing scalability, flexibility, and managing large quantities of data. Furthermore, it provides the ability to develop both the frontend and backend of an application in unison.

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