How to reference a JavaScript variable inside JSX with curly braces; How to call a JavaScript function inside JSX with curly braces; How to use a JavaScript object inside JSX with curly braces

You can put any valid JavaScript expression inside the curly braces in JSX. For example, 2 + 2, user.firstName, or formatName(user) are all valid JavaScript expressions. In the example below, we embed the result of calling a JavaScript function, formatName(user), into an <h1> element.

Expressions in JSX. With JSX you can write expressions inside curly braces { }. The expression can be a React variable, or property, or any other valid JavaScript expression. JSX will execute the expression and return the result:

Feb 4, 2024 · Yes! In web development, combining JavaScript with JSX opens up dynamic possibilities for creating interactive UI components. In this article, you will learn the step-by-step process of integration of JavaScript expressions within JSX. Prerequisites: Node & NPM; React vite; React; JavaScript; What is JSX and How it works?

In React, you can conditionally render JSX using JavaScript syntax like if statements, &&, and ? : operators. You will learn How to return different JSX depending on a condition

Feb 9, 2018 · The ReactJS documentation says something interesting and powerful about what their JSX is capable of: You can embed any JavaScript expression in JSX by wrapping it in curly braces. For example, 2 + 2 , user.firstName , and formatName(user) are all valid expressions.

Apr 4, 2025 · JSX combines HTML and JavaScript in a single syntax, allowing you to create UI components in React. It simplifies rendering dynamic content by embedding JavaScript expressions inside HTML-like tags. Syntax: <h1>Hello, world!</h1> is a JSX element, similar to HTML, that represents a heading tag.

JSX offers expressive syntax that simplifies the process of building user interfaces in React applications by combining the strength of JavaScript and the simplicity of HTML. Before returning a response to the web browser, React uses Babel to transpile JSX into native JavaScript code.

Feb 13, 2023 · What are React.js Expressions in JSX? Expressions in JSX are JavaScript expressions that can be used to evaluate and display dynamic values within JSX code. They are defined within...

JSX supports expression in pure JavaScript syntax. Expression has to be enclosed inside the curly braces, { }. Expression can contain all variables available in the context, where the JSX is defined. Let us create simple JSX with expression. var cTime = new Date().toTimeString(); ReactDOM.render( <div><p>The current time is {cTime}</p></div>, .