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

I have a component that will sometimes need to be rendered as an <anchor> and other times as a <div>. The prop I read to determine this, is this.props.url. If it exists, I need to render the component wrapped in an <a href={this.props.url}>. Otherwise it just gets rendered as …

React creates a UI tree from your components. In this example, the UI tree is then used to render to the DOM. Like browsers and mobile platforms, React also uses tree structures to manage and model the relationship between components in a React app.

Jun 26, 2024 · React maintains its states by storing the order of useState calls and fill in the states with that order during the next re-rendering. But when there is a conditional re-rendering, like having a boolean flag to control whether a child will be shown or not, this order is broken. const [count, setCount] = useState(0); return (

Dec 19, 2016 · We know that React will crawl the Virtual DOM top to bottom looking for changes in the component tree, and updating the corresponding part of the DOM. But we can help React do this even...

Oct 30, 2023 · In this article, you'll learn about the benefits of conditional rendering, how it differs from conditional routing, and how to implement both in React, Next.js, and Remix.

Nov 15, 2024 · Conditional rendering in React is based on the concept of a virtual DOM (Document Object Model). The virtual DOM is a lightweight in-memory representation of the real DOM, which is used to determine the changes between two different versions of a component.

Jan 10, 2024 · Review popular methods to implement conditional rendering in React and determine the best choice for your project.

You have learned how to implement a React component as well as to differentiate between a React component and a React element. You also learned how to use JSX to accurately depict the tree of elements that is being rendered and how you can leverage lifecycle methods to react to changes in your data.

We know that React will crawl the Virtual DOM top to bottom looking for changes in the component tree, and updating the corresponding part of the DOM. But we can help React do this even better by writing proper conditional statements.