Menus with React

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Menus with React

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Last edited Nov 14, 2025

Created on Nov 14, 2025

This example demonstrates a simple React application that renders the text "Hello React!" in the center of the browser window. The code calculates the window dimensions and positions the message at the exact center using JavaScript calculations. It uses React 16.9.0 and ReactDOM to mount the App component into the root div, with the UI defined through JSX syntax. The example shows the basic setup for a React-based data visualization project, providing a starter template that can be extended with additional visualization libraries.

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