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...
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. Example: constMy...
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, ...
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....
How do you create a ref in a class component in React? What does 'PureComponent' do in React? What is the purpose of the 'key' prop in a React list? How can you access a prop named 'username' in a functional component? What is the use of the 'useReducer' hook in React?
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. ...
React’s Context API is a powerful feature that allows developers to manage global application states without relying on third-party libraries like Redux. The Context API enables the creation of a global context that can be accessed by any component in the component tree, without the need for ...
What doesReact.forwardRefmean? What does useImperativeHandle mean? How does useRef solve the null pointer problem? Typically, useRef is used to refer to a component's Dom node. A ref in Vue refers to a vue component. Unlike Vue, the ref in react not only refers to the Dom node, but ...
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 ...