Articles and code samples created in response to many frequently asked questions about React

How to create a react project with TypeScript?

React is a popular JavaScript library for building user interfaces and TypeScript is a statically-typed superset of JavaScript that adds features like type checking, interfaces and more. By combining these two technologies, you can build scalable and maintainable web applications with confidence. Here are the steps to create a new React app using TypeScript: Install Create React App: To get started, you need to install Create React App globally on your machine. You can do this by running the following command in your terminal: npm install -g create-react-app       2. Create a new React app with TypeScript: To create a new React app with TypeScript, you need to run the following command: npx create-react-app my-app --template typescript       3. Navigate to the project directory: After creating the app, navigate to the project directory by running the following command: cd my-app      4. Start the development server: Once you are inside the project directory, you can start the development server by running the following command: npm start Start coding: You can start coding your application by opening the src directory in your favorite code editor. The src directory contains all the source code for your application, including the components, styles, and TypeScript files. By following these steps, you have created a new React app with TypeScript. You can now start building your application, using the benefits of both React and TypeScript, to create scalable and maintainable web applications.

How to create a PDF file using React.js? React To PDF

You are developing web applications with React, one of the widely used javascript frameworks. You want a certain image (Component) to be saved as a pdf in one of the applications. So how can you do this? We can use the very useful "react-to-pdf" package created to convert any component into pdf in React. To install the package, simply run the following npm command: npm i react-to-pdf After installing the package, you can simply create a pdf with react by following the steps below. We include the ReactToPdf package in our file: import ReactToPdf from 'react-to-pdf' We create ref using React.createRef() : const ref = React.createRef(); We give the ref value that we created to the main tag of the section we want to include in the PDF as a prop. Finally, you can complete the necessary processes to create a pdf by adding the values I gave below in the ReactToPdf tag. <ReactToPdf targetRef={ref} filename="lorem.pdf">     {({toPdf}) => (        <button onClick={toPdf}>Generate pdf</button>     )} </ReactToPdf> Combining what I have said, I would like to give the following codes as an example. import React from 'react' import ReactToPdf from 'react-to-pdf' const ref = React.createRef(); export const App =()=> {   return (     <div>       <ReactToPdf targetRef={ref} filename="lorem.pdf">           {({toPdf}) => (             <button onClick={toPdf}>Generate pdf</button>           )}       </ReactToPdf>       <div ref={ref}>         Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularized in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.       </div>     </div>   ) } export default App;

How to Disable the Right-Click in React

As a developer, you may want to disable the right-click menu in your React application for various reasons, such as preventing users from downloading images or copying text. Fortunately, it's relatively easy to do so using React's event handling system. To disable the right-click menu in a React component, you can add an event listener to the component's root element for the "contextmenu" event. This event is triggered when the user right-clicks on the element. By preventing the default behavior of this event, you can prevent the right-click menu from appearing. Here's an example of how to disable the right-click menu in a React component: [[reklam]] import React, { useEffect } from 'react'; function MyComponent() {   useEffect(() => {     function handleContextMenu(e) {       e.preventDefault(); // prevents the default right-click menu from appearing     }     // add the event listener to the component's root element     const rootElement = document.getElementById('my-component');     rootElement.addEventListener('contextmenu', handleContextMenu);     // remove the event listener when the component is unmounted     return () => {       rootElement.removeEventListener('contextmenu', handleContextMenu);     };   }, []);   return (     <div id="my-component">       {/* your component's content */}     </div>   ); } [[reklam]] In this example, we're using React's useEffect hook to add and remove the event listener when the component is mounted and unmounted, respectively. The handleContextMenu function is called when the "contextmenu" event is triggered, and it prevents the default behavior of the event using the preventDefault method. It's worth noting that disabling the right-click menu can be a user-hostile practice, and you should consider the user experience before using this technique. For example, if you're disabling the right-click menu to prevent users from copying text, you may be making it more difficult for users with accessibility needs to access the content. [[reklam]] In conclusion, disabling the right-click menu in a React application is a simple process that involves adding an event listener to the component's root element for the "contextmenu" event and preventing its default behavior. However, it's important to use this technique thoughtfully and consider its impact on the user experience.