How can one tell the version of React running at runtime in the browser?

React is a popular JavaScript library used for building user interfaces. As a developer, it is important to know the version of React running in the browser, especially when debugging or troubleshooting issues. In this article, we will explore different ways to determine the version of React at runtime.

Method 1: Using the React.version property

React provides a global React.version property that holds the version number. You can access this property to get the React version.

// Accessing React version
const reactVersion = React.version;
console.log('React version:', reactVersion);

Method 2: Inspecting the React package in the browser’s developer tools

If you have access to the browser’s developer tools, you can inspect the React package to find the version. Here’s how:

1. Open the developer tools in your browser.
2. Navigate to the “Sources” or “Network” tab.
3. Search for the React package (e.g., react.js, react.min.js) in the loaded scripts.
4. Click on the React package to open it.
5. Search for the version number within the package code.

Method 3: Using a third-party library

There are also third-party libraries available that can help you determine the React version. One such library is React DevTools. This library provides a browser extension that allows you to inspect React components and view the version information.

Once you have installed the React DevTools extension, you can open the developer tools and navigate to the “React” tab. Here, you will find the version information along with other useful tools for debugging React applications.

These are the three methods you can use to tell the version of React running at runtime in the browser. Choose the method that best suits your needs and preferences.

Happy coding!