What is the difference between JS and JSX in React

JavaScript (JS) and JSX are fundamental concepts in React development, but they serve different purposes and have distinct characteristics. Understanding their differences is crucial for building React applications effectively.

JavaScript (JS)

JavaScript is a versatile, high-level programming language that is integral to web development. It enables interactive and dynamic functionality on web pages. In the context of React, JavaScript is used to create components, manage state, handle events, and interact with APIs. Key features of JavaScript include:

1.    
Syntax and Semantics: JavaScript has a well-defined syntax for writing code, including variables, functions, loops, and conditionals.-  React Js Online Training 

2.     Dynamic Typing: JavaScript is dynamically typed, meaning variable types are determined at runtime.-  React JS Training Institutes in Hyderabad

3.     Prototypal Inheritance: JavaScript uses prototypes for inheritance, which allows objects to inherit properties and methods from other objects.- ReactJS Online Training in India

4.     Asynchronous Programming: JavaScript supports asynchronous programming through callbacks, promises, and async/await, which is crucial for handling asynchronous operations like API calls.

JSX (JavaScript XML)

JSX is a syntax extension for JavaScript, specifically designed for use with React. It allows developers to write HTML-like code within JavaScript, making it easier to create and visualize UI components. Key characteristics of JSX include:

1.     Syntax: JSX syntax resembles HTML but is embedded within JavaScript. This blend allows developers to write markup directly within their JavaScript code.- 

2.     Component Creation: JSX simplifies the creation of React components by enabling a declarative way to describe the UI. Components can be written as functions or classes and return JSX to define the component’s structure.- React Js Training Course 

Key Differences

1.     Purpose: JavaScript is the core programming language used to implement the logic and functionality of an application. JSX, on the other hand, is a syntax extension that simplifies the creation of React components and the UI.

2.     Syntax: JavaScript uses its native syntax, while JSX incorporates HTML-like syntax within JavaScript. JSX expressions can include JavaScript code within curly braces {}.

3.     Usage: JavaScript is used throughout the entire React application for logic, state management, and more. JSX is specifically used within React components to define the UI structure.

Summary:

 while JavaScript provides the foundation for building the functionality of React applications, JSX enhances the development experience by offering a more intuitive way to define and manage UI components. Understanding the differences between JS and JSX helps developers leverage the strengths of both in building robust React applications.

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