JSX is a (Javascript xml) is an extension to javascript syntax that allow you to write HTML -like code with in your javascript when working with react.

It provide concise and expression way to describe the strcuture and appearence of your user interfaces.

JSX enables you to seamlessly mix JavaScript expressions and HTML-like markup. This allows you to embed dynamic data and logic directly within your UI components.

JSX code is not directly understood by web browsers, so it needs to be transpiled (converted) into regular JavaScript using tools like Babel before it can be run in a browser.

In React, JSX is used to define the structure and behavior of components. Components are reusable building blocks that encapsulate a part of the user interface.

JSX elements are used to create a virtual representation of the DOM (Document Object Model). React uses this virtual DOM to efficiently update and render changes to the actual DOM, improving performance.

JSX example:

import react from "react";
const app = () => {
return{
<div>
<h1> hello jsx!</h1>
<p>react component.</p>
</div>
);
);
export default app;

In this example code inside the return statement look similar to HTML but its actually JSX

NOW WE DISCUSS ABOUT THE JS EXPRESSION:

JSX elements can also include javascript expression inside curlybraces { }

These allows you to embed dynamic values or execute javascript code within JSX.

const name ="Mushahir Mohamed";
const greeting =<h1>hello,{name}!</h1>;

IMPORTANT POINT JSX in React

Import react :

begin by importing the react libraryone root element:

JSX expression must have a single root element

Html like syntax:

JSX uses html like syntax to define elemenyts and attributes

Self closing tags :

use self closing tags for elements without children

class vs classname :

use classname instead of class for css classes

inline styles :

apply inline styles using style attributes with a javascript object

capitalize component :

names to differentiate them from html elements

javascript experssion not statement:

use javascript statement not statements inside the curly braces

commenting:

place comment within curly braces

fragments :

use fragments to group elements without adding extra nodes to the DOM

Event handling:

define event handlers using camelcase naming convention

keys in lists:

assign unique key props to items in list of effective rendering

conditional rendering:

use javascript expression or logical operators for conditional rendering

conclusion

JSX is a powerful and integral part of React that simplifies the creation of user interfaces by allowing developers to write HTML-like code directly within JavaScript files. It combines the benefits of both JavaScript and HTML to create dynamic and interactive web applications. Understanding how to use JSX effectively is essential for working with React and building modern web applications.

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