Would you like to learn more about this exciting web technology? Then follow along as we talk about what ReactJS is and what ReactJS you can use it for.
What Is ReactJS?
ReactJS is a user interface library, in other words, you still need other technologies for the back-end. This is not to say that ReactJS is not worth using. Far from it!
ReactJS is, in fact, one of the most popular front-end technologies available. Being a creation of Facebook has lent ReactJS extra credibility in the developer community. Part of that is its easy learning curve and ease of use.
Built from the top for gradual adoption, you can add as little or as much ReactJS to your site as you want. Start by converting one section of your site, to add some interactivity for your users. A small chat window for your users, for example.
Granted, most websites don’t need to be single-page applications, but you never know what you’ll need down the line. Changing one section of your website to a ReactJS driven application might give you ideas for things you didn’t know you wanted. And it never hurts to learn about new technology!
Right now is a great time to hire a React developer to help build your website or mobile application. There are a lot of ReactJS developers out there, so there are plenty to choose from!
What Is ReactJS Used For?
ReactJS is flexible enough to build simple games with, such as a React Tic Tac Toe, crossword puzzles, Sudoku, and even Minesweeper. While not the main implementation of ReactJS, it gives you an idea of what you can do with the library.
ReactJS really shines in places like dashboards or data visualization pages. ReactJS’s Components system, which allows you to create reusable and self-contained components, makes your code cleaner and prevents you from re-inventing the wheel. Code reuse is a foundation of good programming and design.
How Does ReactJS Work?
ReactJS uses its two biggest features, JSX and Virtual DOM, to make it easier to change the Document Object Model(DOM) of the page. Since the Virtual DOM only changes the parts of the page that need changing, it offers a significant performance boost over other libraries.
Every web application starts with an HTML document. Simple mark-up code that your browser transforms into a web page or application. While this is going on, the browser creates an outline of the page as it is loaded.
This outline is the DOM. It can be modified dynamically without refreshing the page. JSX allows you to modify the DOM using HTML-like statements and is compatible with all modern browsers.
JSX helps keep your site or mobile application safe by escaping values in your JSX components before rendering them. These values change into strings before use. This helps to prevent a malicious attack known as cross-site-scripting(XSS).
The Virtual DOM is a copy of the actual DOM. When the DOM gets modified using JSX, ReactJS uses this copy to see where the page needs an update, then only updates that. This comes in when your page or app has a lot of user interactivity so that the app is not called to constantly refresh the page. For example, you have a comments section on your page.
When someone types a comment and pushes the ‘send’ button, their comment will show up instantly, no refresh needed. ReactJS reads its Virtual DOM to see where on the page the comments go, then displays that comment on the top of the rest. The selective updating for even moderately complex websites saves on computer power and shortens the loading time for these websites and applications.
ReactJS for Your Website
As you can see, it is great for speeding up your website and simplifying your code a bit. It has a lot of flexibility to make your websites or mobile apps pop for your users.
Did you like this article? Take a look around the site for more articles about programming and tech!