![]() ![]() Every HTML element should be wrapped by an outer HTML element to create a valid JSX element. Let us add a subtitles and other contents to this JSX element by adding additional HTML elements. ![]() ![]() Let's make more JSX elements by declaring a new variable named title and content inside h2. const js圎lement = I am a JSX element // JS with HTML This JSX element has only one HTML element which is h1. JSX element could be a single HTML element or many HTML elements wrapped in a parent HTML element. The HTML element in the JSX above is h1 and small.Īs you have seen in the example above, JSX has a JavaScript and HTML like syntax. JSX can allow us to use HTML in JavaScript. It is a mix of JavaScript and an HTML elements. The above strange looking code seems like JavaScript and it seems like, but it is not JavaScript and it seems like HTML but not completely an HTML element. JSX syntaxĬonst welcome = Welcome to 30 Days of React Challenge Babel is a library which transpiles JSX to pure JavaScript and latest JavaScript to older version. JSX will be converted to JavaScript on browser using a transpiler - babel.js. Therefore, JSX makes it easier to write and add HTML elements in React. To create HTML elements in React we do not use the createElement() instead we just use JSX elements. However, some HTML elements may not have content and a closing tag - they are self closing elements. An HTML element has an opening and closing tags, content, and attribute in the opening tag. JSX allows us to write HTML elements with JavaScript code. Why we choose to use React ? We use it because of the following reasons: If I have to recommend another JavaScript library next to React, it would be Vue.js. These alone will not be a very good measure of popularity, but still it tells a little bit about the popularity of the two technologies. You may look at the number of watchers, stars and forks for both React and Vue. From the diagram, you can speculate the most popular JavaScript library. As of today, the popularity between the two most popular JavaScript looks like as shown on the diagram. Let us compare the popularity of React and Vue. How do we measure popularity? One measure of popularity could be GitHub repository stars, watchers and forks. Its popularity has been growing fast and it has a huge community. Many developers and companies have been using it for the last couple of years. React is one of the most popular JavaScript libraries. React official documentation can be found here.React allows us to create reusable UI components.React is used to build single page applications - An application which has only one HTML page.React is a JavaScript library for building user interfaces.We use react to make a reusable UI components of a website. A web application, or a website, is made of buttons, links, forms with different input fields, header, footer, sections, articles, texts, images, audios, videos and boxes with different shapes. In this challenge, we will develop 10-15 web applications using React. Do not directly interact with DOM when you build a React Application and leave the DOM manipulation job for the React virtual DOM. React uses its virtual DOM to make new changes and it updates only the element, that needs changing. React has its own way to handle the DOM(Document Object Model) manipulation. When we work with React we do not interact directly with the DOM. The official React documentation can be found here. React makes creating UI components very easy. The current version is 16.13.1 and somehow it is stable. It was initially released on May 29, 2013. React is a JavaScript library for building a reusable user interface(UI). ![]() In this article we will learn about React Js. ![]()
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