JavaScript Day 98— Mastering Interview Basics: A Comprehensive Guide for Interview Preparation
100 Days of JavaScript Interview Prep: A Beginner’s Journey | General Introduction Interview Questions
How does the Context API handle performance, and what should be cautious about when using it?
The Context API in React provides a way to share state across components without having to pass props down manually through every level of the component tree.
Performance Handling
Re-Renders:
When the value provided by a Context changes,all components that consume
that Context will re-render.
This can lead to unnecessary re-renders if many components are listening
to the same context, especially if only a few need to update.Memoization:
To optimize performance, we can use React.memo for functional components or
shouldComponentUpdate in class components.
This prevents components from re-rendering if their props haven't changed.Splitting Contexts:
If we have a large application, consider splitting your contexts.
Instead of using a single context for multiple values, create separate
contexts for different…