What are Error Boundaries in React?
Error boundaries are a powerful tool in React for handling errors gracefully and preventing them from crashing the entire application. Imagine an error boundary like a safety net surrounding specific components. When an error occurs within the wrapped components, the error boundary catches it and prevents it from propagating further. Instead of crashing, the error boundary displays a custom fallback UI, often informing the user and providing potential solutions.
When to Use Error Boundaries?
Use error boundaries when you want to prevent crashes in your app caused by unexpected errors in certain parts of your UI. It helps keep your app running smoothly even if something goes wrong.
Example:
Imagine you have a component that fetches data from a server. If the server is down or there’s an issue with the data, instead of crashing the whole app, you can use an error boundary to handle that error gracefully and show a user-friendly message instead.
How can you use error boundaries to handle errors in a React application?
Error boundaries are React components that detect JavaScript errors anywhere in their child component tree, log them, and display a fallback UI rather than the crashed component tree. Error boundaries catch errors in rendering, lifecycle functions, and constructors for the entire tree below them.
Table of Content
- What are Error Boundaries in React?
- Steps to Implement an Error Boundary in React
- Limitations of Using Error Boundary
- Error Boundary vs Try…Catch
Prerequisites: