JSX, a JavaScript extension for incorporating HTML within JavaScript, has become a popular way to define the structure of an application view while interacting with JavaScript. It was originally introduced as a templating language for React framework, which has inspired a variety of other frameworks such as Vue and Svelte.
JSX allows developers to incorporate HTML markup directly into JavaScript, challenging the conventional separation of view and behavior. The resulting code is beloved by some and disdained by others.
In a basic React application, JSX is used to define the structure of the view. This is demonstrated in the following code snippet:
“`jsx
import React from ‘react’;
export function App(props) {
return (
Greetings from InfoWorld
This is some JSX
);
}
“`
In this example, the HTML markup is wrapped inside of JavaScript. Variables can be easily introduced into the markup, taking advantage of JSX’s ability to execute JavaScript expressions within the larger context of surrounding code.
JSX also supports looping and conditional rendering. For example, an array of dog breeds can be looped over and their names displayed in HTML. Conditional logic and event handling are also supported, making JSX a powerful tool for building user interfaces. Additionally, JSX allows for CSS styling and error handling within the React framework.
In conclusion, JSX seamlessly integrates JavaScript and HTML, providing a powerful tool for building dynamic user interfaces. Its familiarity with JavaScript and HTML makes it widely used in the development community.
