What is a Functional Component? These are simply JavaScript functions. We can create a functional component in React by writing a javascript function. These functions may or may not receive data as parameters. In the functional components, return the value in the JSX code to render to the DOM...
In this exampleWe have a SwitchingComponent functional component. It uses the useState hook to manage the active tab state (activeTab). We define a function handleTabChange to update the active tab state when a tab button is clicked. Three tab buttons are rendered, each calling handleTab...
This is typically done at the top of the file. For example: import React from 'react'; Define react JSX Components: Components are the building blocks of React applications. You can create functional components or class components. To define a functional component, declare a function that ...
One of the key features of React is its component-based architecture, which allows you to break down your user interface into reusable and independent building blocks called components.In this article, we will explore two types of components in React: functional components and class components....
React.memo() is very simple to use because it is identical to React.PureComponent. While React.memo() works with functional components, PureComponent works with class components. Consider these two components. The Parent component will look like this. const Parent= () => { const [counter1, ...
React.js is designed so that it will only support data that is flowing downstream, in one direction. If the data has to flow in another direction, you will need additional features. React contains a set of immutable values passed to the component renderer as properties in HTML tags. The c...
React provides several ways to optimize the performance of applications, such as using the React.memo() function to memoize functional components, shouldComponentUpdate() to prevent unnecessary updates in class components, or the useCallback and useMemo hooks in functional components. ...
In existing React, the update process is synchronous, which may cause performance issues. When React decides to load or update the component tree, it will do a lot of things, such as calling the life cycle functions of each component, calculating and comparing the Virtual DOM, and finally up...
In React, we mainly have two types of components-: Functional Components:Similar to the name suggests, functional components are simply JavaScript functions. The primary purpose of the functional component is to render the view and the data to the browser. ...
importReactfrom'react'constApp=({name})=>{return(This is a functional component.Your name is{name}.)}ReactDOM.render(<App name='Kingsley'/>,document.getElementById("root")); The container component does the job of managing of state. The container, in this case, is the higher-order ...