What is the purpose of the componentDidCatch() method?
Purpose and usage of the componentDidCatch()
method:
- Error Handling: When an error occurs within the component tree of a component, React will call this method with two arguments:
error
(the error that occurred) andinfo
. - Error Logging: Inside the
componentDidCatch()
method, you can log the error, inspect theinfo
object to determine where the error originated in the component tree, and perform any necessary error handling or recovery actions. - Fallback UI: One common use case for
componentDidCatch()
is to render a fallback UI in place of the component tree where the error occurred. This fallback UI can inform the user about the error and provide options to recover from it or report it. - Error Boundary: Components that implement
componentDidCatch()
are often referred to as “error boundaries.” They act as a barrier that catches errors occurring within their child component tree and provides a fallback UI.
Top React Components Interview Questions & Answers
React Component is the building blocks of the React application. It is the core concept that everyone must know while working on React. In this tutorial, we will see the top React Components questions that can be asked in the interview.
Let’s discuss some common questions that you should prepare for the interviews. These questions will be helpful in clearing the interviews, especially for the frontend development or full stack development role.