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  • how to pass data parent to child component using reactjs


    how to pass data parent to child component using reactjs



    Today in this blog, we will aware about Props means (short for properties) are used to pass data from a parent component to a child component by using reactjs. So, without wasting any time lets do it but lets recap what is exactly React js. 



    how to pass data parent to child component using reactjs


    React


    Certainly! ReactJS is a JavaScript library developed by Facebook for building user interfaces. It allows developers to create reusable UI components and efficiently manage the state of their applications. Here are some key aspects of ReactJS:
     

    Component-Based Architecture: ReactJS follows a component-based architecture, where the user interface is divided into small, reusable components. Components encapsulate their own logic, state, and rendering, making it easier to build and maintain complex user interfaces.
     

    Virtual DOM: ReactJS uses a virtual representation of the DOM (Document Object Model), known as the Virtual DOM. When the state of a component changes, React updates the Virtual DOM.
     

    JSX: JSX is a syntax extension for JavaScript used in React. It allows developers to write HTML-like code within JavaScript, making it easier to describe the structure and appearance of components. JSX code is transpiled to regular JavaScript using tools like Babel before being executed in the browser.

     
    Hooks: React introduced Hooks in version 16.8 as a way to use state and other React features in functional components. Hooks allow developers to write reusable logic and manage state within functional components without the need for class components. The most commonly used hooks are useState for managing state and useEffect for handling side effects such as fetching data or subscribing to events.
     

    React Router: React Router is a popular routing library for React applications. It enables developers to create single-page applications with multiple views and handles routing between different components based on the URL.
     

    State Management: React provides a flexible ecosystem of state management solutions. While React's built-in state management (useState ) is suitable for managing local component state, more complex applications may benefit from additional state management libraries like Redux. These libraries help manage global application state and provide predictable ways to update and access the state.

    ReactJS has gained widespread popularity due to its performance, reusability, and declarative approach to building user interfaces. It has large community. 


    NOTE - Here we will Tailwind CSS for designing.



    Here's an overview of how props work in React:


    Parent Component: The parent component is responsible for defining and passing the props to its child component(s).

    Child Component: The child component receives the props passed from its parent and uses them to configure its behavior and render content dynamically.

    Prop Passing: Props are passed as attributes to the child component when it is rendered within the parent component's JSX.

    Accessing Props: Inside the child component, the props can be accessed as an object, and the values can be accessed using dot notation (e.g., props.name, props.age, etc.).



    Example:


    Parent Component:



    import React from 'react'; 
import ChildProps from './ChildProps';

function ParentProps() {
  const name = 'Kumar Atul Jaiswal';
  const age = 24;

  return (
    <div>
      <ChildProps name={name} age={age} />
    </div>
  );
}

export default ParentProps;






    Child Component



    import React from 'react';

function ChildProps(props) {
  return (
    <div>
      <h1>Name: {props.name}</h1>
      <p>Age: {props.age}</p>
    </div>
  );
}

export default ChildProps;


    The ParentComponent renders the ChildComponent and passes two props: name and age. The child component receives these props as an object (props) and uses them to render dynamic content. The child component can access the name and age props using props.name and props.age, respectively.

    Props are read-only, meaning that the child component cannot modify the props directly. They are used to provide information and configuration to the child component from its parent. If the parent component needs to update the data passed to the child component, it can do so by changing the prop values in its own state and triggering a re-render of the child component with the updated props.


    And ParentProps component call in App.jsx 


    // import Profile from "./components/Profile"
import { Route, Routes } from "react-router-dom";
import ParentProps from "./components/ParentProps";

export default function App() {
  return (

    <>
 
<ParentProps />

    </>
  )
}



    Output 



    how to pass data parent to child component using reactjs





    Disclaimer


     
    All tutorials are for informational and educational purposes only and have been made using our own routers, servers, websites and other vulnerable free resources. we do not contain any illegal activity. We believe that ethical hacking, information security and cyber security should be familiar subjects to anyone using digital information and computers. Hacking Truth is against misuse of the information and we strongly suggest against it. Please regard the word hacking as ethical hacking or penetration testing every time this word is used. We do not promote, encourage, support or excite any illegal activity or hacking. 


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