JSX is a special syntax extension to JavaScript that is used for describing how a user interface should be constructed. It stands for JavaScript XML, as it allows users to write HTML-like tags in their JavaScript code.
JSX was originally developed by Facebook in 2011 as a way to make JavaScript code more readable, maintainable, and expressive. It is a combination of JavaScript and XML (eXtensible Markup Language) which is a shorthand for HTML, and allows developers to skip the tedious task of writing out long string of HTML. Instead, developers can write code with a familiar XML-like syntax. JSX is also beneficial because it allows developers to sandbox HTML code within the JavaScript context. This eliminates the need for manually escaping characters and allows developers to write more concise and maintainable code.
In addition to making the code easier to read, maintain, and debug, JSX is also more efficient. Unlike HTML, JSX allows developers to use JavaScript expressions within its markup, which can be used to dynamically render components based on user input. Also, because JavaScript code written in JSX is more compact than pure HTML, it can reduce the size of a codebase and enable faster rendering.
Overall, JSX is a powerful yet simple syntax extension to JavaScript that makes code more expressive, efficient and readable. By combining the simplicity of HTML with the flexibility of JavaScript, JSX enables developers to quickly create advanced and customized user interfaces that can be easily maintained and reused.