In this way our debounce function is reusable throughout our program. We could debounce as many different functions as we want, because each one has its own timeoutId variable.How to write a debounce function in ReactReact allows us to encapsulate logic in components, so we can skip the ...
In this tutorial, we will go over the concept of forwarding refs in React and understand how it helps us manage interactions with the DOM. For a more engaging experience, we’ll cover how to create refs, attach created refs to DOM elements and classes, use the forwardRef method, and more...
useMemo helps memoize these functions in order to optimize performance. How Does useMemo Work in React? In order to understand useMemo, we need to reflect back on what memoization is. If there is a function that is expensive, such as fetching a lot of data, memoization is a way to ...
In React versions prior to 17.0, JSX was transformed intoReact.createElement()function calls by the JSX transformer at compile-time. This required importing React for the React elements to work. With the introduction of a new JSX transform in React v17.0, special functions from the React package...
The library provides ways to wrap your existing React components and apply the appropriate styles based on the screen size. This can help you avoid having to manually write @media rules in your CSS, and makes it easy to create responsive designs without a lot of extra effort. There are seve...
Before you start learning React, you need a solid foundation in several web technologies. React itself is a JavaScript library. So, you will benefit from understanding JavaScript fundamentals to use it effectively. This includes things like functions, objects, arrays, DOM manipulation, and ES6 synta...
Unlike strict Test Driven Development (TDD), where the standard practice is to write failing tests first then write the code to make the tests pass, snapshot testing takes a different approach. When writing snapshot tests for a React component, you first need to have code in a work...
Functional components in Next.js are executed exactly like regular functions; they return some custom HTML used to render your component. This means any values in the function are initialised when you call the function, resetting them every time your component renders. You can use the useState ...
Unlike the old View system, Compose provides a declarative API that enables your UI to react to changes, without imperatively mutating the frontend views.
Since JSX enables you to also write JavaScript in your markup, you’ll be able to take advantage of JavaScript functions and methods, includingarraymapping and short-circuit evaluation forconditionals. As part of the tutorial, you’ll capture click events on buttons directly in the markup and ca...