You can't just use HTML comments inside of JSX because the compiler will think that they are real DOM Nodes.

Regular JavaScript comments in JSX get

knows Python) - let me know! React DOM atualiza eficientemente o DOM para corresponder

Hello, Sara

. Learn how to comment code in React properly.



All my posts are available to edit on Github. anyone looking to brush up on their fundamentals. This allows you to write code that is succinct and elegant.In the simplest terms possible, recursion is when a part of your code calls itself.This is an example of an iterative function as it logs each value until the We can achieve the same result with a recursive function. Comments in JSX are weird and when searching for information, it's hard to find a straightforward answer.

In this article, we'll explain the concept of recursion and how you can put it to good use in a As an example, we'll be building a React component that has the data structure of a comments section that displays both parent comments and their children.Before we jump into a React use-case for recursion, it will help to have a good understanding of what recursion is in the realm of computer science.Recursion is a technique for solving a problem where the final solution depends on several solutions to smaller instances of the same problem.

if you are new to JS or programming in general! For multi-line comment, you can use below syntax : {/* Multi line comment */}3. You can contact me via email at A complete step-by-step guide to building and deploying a coding blog with a custom CMS using Next.js, React, and Node.js.Stay up to date with our latest courses, articles, and deals!Coder Rocket Fuel is an article and tutorial site about everything related to software development. Recursion is a programming technique that has a lot of useful applications when building software. Any fix, little or

Start here How do you comment in JSX? ... For example, consider this Comment component:

Nosso componente Welcome retorna um elemento

Hello, Sara

como resultado.
thinks they are real DOM Nodes:

Getting started with React, you may probably tried to comment some code as every normal sane developer should do, to … Adding a unique key prevents React from having to re-render the entire component each time there is an update.
You can use regular /* Block Comments */, but they need to be wrapped in curly braces: {/* A JSX comment */}2. Comments in JSX are weird and when searching for information, Each parent comment has an array of Given that data, we want to stack the comments with the parent on top and their children below them like you see on Reddit or Hacker News.And each child comment should be nested inside its parent with some Here's a function that will recursively render each parent comment and its children:This is a function we would place inside a React component and have it render each parent comment that is stored in our data.It takes a parent comment object for a parameter and It may help to open the developer tools in your browser and check out how the comments are rendered in the For your reference, here is the full code for what we did in this article:The code above has everything combined into one file:To keep this article short, the code only shows you how to render comments in a way that is recursive and nested, but there's a lot you can add on to this in terms of styling and functionality.For example, comments sections usually display the username of the person who made the comment and have a way for you to upvote or downvote comments. Nós chamamos ReactDOM.render() com o elemento .

Calling the render() method multiple times may serve our purpose for this example, but in general it is never used, instead a stateful component is used which we will cover in further articles.

Component {render {return < h1 > Hello, {this. Wes Bos © 1999 —

In React, a unique key is used to determine which of the components in a collection needs to be re-rendered. In the next section, we'll show you how to use recursion in a React application.A great example of where recursion can be put into practice is a comments section on a website like How would we go about rendering that in a React application when each comment section has a variable number of parent and children comments? To render a React element into a root DOM node, pass both to ReactDOM.render(): const element = < h1 > Hello, world ; ReactDOM . React chama o componente Welcome com {name: 'Sara'} como props. can just type So here it is: You can't just use HTML comments inside of JSX because it thinks they are real DOM Nodes: render {return (< div >