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In this example, the parent component passes the updateData callback to the child component. When the child component's button is clicked, it triggers the callback, updating the parent's data, which is then displayed in the parent component. 🔄💪🏻.

🧵 Let's make it happen with code snippets! ✨

🔁 Reverse Data Flow: Child ➡️ Parent Components 👩🏻‍🦱🧒🏻. Child components updating parent data? React has you covered! Using callbacks, children can call functions passed as props by parents, enabling them to update parent data. 🔄.

Achieving Reverse Data Flow: Child ➡️ Parent Components 👩🏻‍🦱🧒🏻. Wondering how child components can update data in their parents? Fear not! In this thread, we'll unravel the secret of reverse data flow, allowing children to communicate with their parents. Let's get started! 🚀🔀.

In this example, the parent component (ParentComponent) passes the data as the message prop to the child component (ChildComponent). The child component then receives and displays the message by accessing props.message. 📝. 📌 Use #ReactDataFlow #PropsInReact for more info! 💡.

🧵 Here's a simple code snippet to demonstrate:

Parent ➡️ Child Components 🧒🏻👩🏻‍🦱. In React, data flows from the parent component to its child components through props 📦. Props are like gift boxes containing data that parents pass to their children. Children receive these gifts and display or use them as needed. 🎁.

🌟 Understanding Data Flow in React: Parent ➡️ Child Components 🧒🏻👩🏻‍🦱.Ever wondered how data moves within a React application? we'll explore the fascinating journey of data flow from parent to child components, and how information is shared along the way. Let's dive in! 🏊‍♂️💨.

If you know MERN and searching for internships and jobs , have some great projects in your resume. Checkout this thread to know more about what projects you can work on. .

I hope this thread helps you understand and resolve the "stale useEffect variable" bug. Happy coding! ✨👩‍💻👨‍💻 .#React #useState #javascript.

9/9 📚 Learn More: If you want to explore more about React and its hooks, check out the React documentation:

8/9 🚀 Example Problem: With the updated code, let's revisit the example problem. Now, whenever you click on the document body, the current value of the counter will be logged correctly, reflecting the latest value of the variable.

7/9 🔄 Dependency Array: The dependency array [counter] tells React to re-execute the effect whenever the counter variable changes. This ensures that the effect has access to the latest value of the variable.