Build a dark mode light mode in reactjs with context api

TL;DR

This video explains how to use the React Context API with a custom hook to create a simple theme toggler in a React application.

Transcript

hey there everyone hes here welcome to another video in our react journey I hope you're following this journey along and if you're watching this in a long one short video that's cool even uh but don't forget to leave a comment in the comment section it's my motivation driving Factor so hit that subscribe if you haven't already and it's a humble req... Read More

Key Insights

• 🌐 The React Context API is a powerful tool in managing global state in React applications.
• 🪝 Creating a custom hook can simplify the usage of the Context API in different components.
• 👻 Using the Context API with a custom hook allows for easy sharing and updating of data between components.

Questions & Answers

Q: What is the React Context API?

The React Context API is a feature in React that allows you to manage global state and share data between components without passing props manually. It provides a way to pass data through the component tree without using props.

Q: How do you create a context in React?

To create a context in React, you can use the createContext function provided by React. This function returns an object with two properties: Provider and Consumer. The Provider component is used to wrap the part of the component tree where you want to make the context available, and the Consumer component is used to access the context in other components.

Q: What is a custom hook in React?

A custom hook is a JavaScript function that starts with the word "use" and uses built-in React hooks to create reusable logic. Custom hooks allow you to extract stateful logic from components and share it between different components.

Q: How can you use the React Context API with a custom hook?

To use the React Context API with a custom hook, you can create a context using the createContext function and provide the initial state and functions as values. Then, create a custom hook that uses the useContext hook to access the context and return the context values. This allows you to easily consume the context in different components.

Summary & Key Takeaways

• The video introduces the concept of using the React Context API to manage state in a React application.

• It demonstrates how to create a context, provider, and consumer using the Context API.

• The video also shows how to create a custom hook to simplify the usage of the context in different components.

• A simple theme toggler example is used to illustrate the concepts discussed.