There is a way by using the Profiler. It’s extremely easy to use and super lightweight. Profiler API All you need to do to use it is to import it from React and wrap the part of the JSX tree that you’d like to have analysed. Let’s write a simple counter application and analys...
You can use the built-in fetch() method in JavaScript to make HTTP requests, and you can use the setState() method in React to update the state of your application when the response is received. By combining the Fetch API with React, you can build powerful and dynamic web applications...
In this tutorial, Chidi Orji will show you how to build a React drag-and-drop component for file and image uploads. In the process, we’ll learn about the HTML drag-and-drop API. We will also learn how to use the useReducer hook for managing state in a React functional component. The...
If you’re not familiar with React Contexts, make sure to skim through React Context API: Using React Context with APIs effectively. Step 3: Access it within lower React Components Inside any component lower in the Component tree than your Provider, use the useSelector Hook to access state ...
Discover how to effectively use React Context API in both functional and class components. Context provides a way to share values like these between components without having to explicitly pass a prop through every level of the tree.
Map is one of the most popular and widely used functions when working with React. It has two prominent use cases. It’s quite similar to how thefilter()works. The first one is to modify the state of the application and the other to render a list of elements efficiently. Let’s start...
The Context API in React provides you with built-in functions and components to avoid prop-drilling in your component tree. The React HookuseContext()applies the same functionality in a streamlined, functional component body in one call.
To write stable and reliable tests in the React Testing Library, follow these best practices when using act(): 1. Use act() for State and Effect Updates: Whenever a test triggers a state change or an effect like an API call or a timeout, wrap the action inside act(). This ensu...
While doing work in frontend development, you may have come across useMemo. For those unfamiliar with it, we will explain how to use useMemo in React and also the most important/prominent use cases. What is useMemo? useMemo is a great built-in hook that can help with the performance of ...
The useMemo() Hook is a built-in React Hook that allows you to memorize the result of a computation. It’s useful when you have a costly function or calculation that you only want to run when certain dependencies change. To use the‘useMemo()’Hook, follow these steps: ...