![]() There are three aspects to using React Contexts: When your state needs to be accessed or set from many child components.When your state needs to be accessed or set from deeply nested components.When developing a React app, the primary situations where the React Context API really shines are: React.js takes care of all the magic behind the scenes to make this work. This solution has the same benefits as the Props solution, but because of what could be called “hierarchical scoping”, it has the added benefit that any component can access the state in any Context that is rooted above itself in React’s hierarchy, without this state needing to be passed down to it as props. React Context API: Store the state in a Context value in the common ancestor component (called the Provider Component), and access it from as many components as needed (called Consumer Components), which can be nested at any depth under this ancestor.But the rule of good software development is to always try the simplest solution first. This might not be a bad thing depending on your project’s requirements. This might be quicker at first, but such libraries inevitably add a non-trivial amount of complexity and come with a learning curve of their own. Library: Use a library like Redux or MobX to manage state for you.It also requires them to know more than they need to about their children and their parent. This clutters the props of each component in the hierarchy. This has the advantage of being simple and easily understandable, but if the target components are very deep or very many, it can get cumbersome to pass the state through so many components. Props: Store state directly in the common ancestor component, and pass it down through as many components as needed, as props, until it reaches the target components.They also need to share functions that can act on or change that data. ![]() Managing nested stateĪny real-world React app is going to need to share state, or data, between different components at different levels of the React.js hierarchy. They provide a way to manage complex, nested state in a simpler and more effective way than using props. React Contexts build on React’s state management. How to Fetch Data from an API with React Hooks.If you’re not yet familiar with React, Hooks, or APIs, or just want a refresher, check out these tutorials: React.js is a powerful way to make sophisticated web apps and websites. Does the React Context API replace Redux?.What is the purpose of React Context API?.When should React Context API not be used?.Using real data with OpenWeatherMap from RapidAPI Building a Multi-city Weather app using React Context API.How does React Context API work with the Render cycle?.
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