ReactJS is a JavaScript library for building user interfaces with features such as JSX, and virtual DOM for efficient updates and unidirectional data flow.
We import the necessary hooks from React: useState and useCallback. Inside the App component, we define the handleIncrement callback function using the useCallback hook. This function increases the count state using the previous count value. The second argument to the useCallback function is an...
importReact,{useContext,useState}from'react';constThemeContext=React.createContext();functionThemeProvider(props){const[theme,setTheme]=useState('light');return(<ThemeContext.Providervalue=>{props.children}</ThemeContext.Provider>);}functionChildComponent(){const{theme,setTheme}=useContext(ThemeContext);re...
To use the state inside a functional component, the “useState” hook is used. For eg: importReact, {useState}from"react";constDemoComponent =()=>{const[value, setValue] = useState(1);return({value}setValue((value + 1))}>Increment Value); };Code language:JavaScript(javascript) As you...
React components can have state, which represents data that can change over time. You can use the useState hook (for functional components) or the setState method (for class components) to manage state within a component. React components have lifecycle methods that allow you to hook into vario...
import React, { useState } from 'react'; const SwitchingComponent = () => { // State to manage the active tab const [activeTab, setActiveTab] = useState('tab1'); // Function to handle tab change const handleTabChange = (tab) => { setActiveTab(tab); }; return ( handleTabChang...
Code-splitting in React is a technique used to split your application's code into smaller chunks, which are loaded only when they are needed. This can significantly improve the initial loading time of your application, especially for larger applications with many components and dependencies....
The state is defined in the “ParentComp” using the useState React hook and two functions - “incrementHandler” and “decrementHandler”. Moreover, the state, i.e. “count” is being rendered in the tag along with the “ChildComp”. Now, observe the “ChildComp”. const ChildComp ...
Woo! BUT! As we learned from "React Hooks: What's going to happen to render props?" custom hooks are a better primitive for code sharing in React. So let's rewrite this to a custom hook: function useCounter() { const [count, setCount] = useState(0) const increment = () => set...
Astro, or Astro.js, is a popularstatic site generatorconceived for those who want to create content-rich websites that run quickly and smoothly. Its lightweight nature, intuitive structure, and gentle learning curve make it attractive to developers of all experience levels. ...