What a component is; What role components play in a React application; How to write your first React component

Components are independent and reusable bits of code. They serve the same purpose as JavaScript functions, but work in isolation and return HTML. Components come in two types, Class components and Function components, in this tutorial we will concentrate on Function components.

Apr 4, 2025 · In React, React components are independent, reusable building blocks in a React application that define what gets displayed on the UI. They accept inputs called props and return React elements describing the UI. In this article, we will explore the basics of React components, props, state, and rendering. What Are React Components?

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Components let you split the UI into independent, reusable pieces, and think about each piece in isolation. This page provides an introduction to the idea of components. You can find a detailed component API reference here. Conceptually, components are like JavaScript functions.

Components are relatively easy to explain: they allow us to de-construct complex user interfaces into multiple parts. Ideally, these parts are reusable, isolated and self-contained.

Sep 5, 2023 · In this tutorial, we'll explore what React components are, how to pass and render data to them using props, and how to enhance their reliability using default props and propTypes. What Are React Components? Imagine you're building a digital LEGO masterpiece.

May 21, 2025 · React doesn't have any hard rules for what is and isn't a component – that's up to you! In this article we will show you a sensible way to break our app up into components. Familiarity with the core HTML, CSS, and JavaScript languages, and the terminal/command line. A sensible way of breaking our todo list app into components.

Component is the base class for the React components defined as JavaScript classes. Class components are still supported by React, but we don’t recommend using them in new code. componentDidUpdate(prevProps, prevState, snapshot?) forceUpdate(callback?) setState(nextState, …

React component is the building block of a React application. Let us learn how to create a new React component and the features of React components in this chapter. A React component represents a small chunk of user interface in a webpage.