Top 10 Features Of React JS For Web Developers

Top 10 Features Of React JS For Web Developers
Sumeet Shroff
Sumeet shroff
November 29, 2018

ReactJS is a popular open-source JavaScript library that enables developers to build high-performing and interactive user interfaces for web applications. Created by Facebook, ReactJS has rapidly gained popularity among developers due to its robust set of features and flexibility. In this article, we will discuss the top 10 features of React JS for web developers, as well as why you should choose ReactJS for your next project.

1. JSX

JSX is a unique feature of ReactJS that allows developers to write HTML-like syntax directly in their JavaScript code. It was introduced by Facebook in 2013 and has since become a popular choice among web developers working with ReactJS.

JSX is not a separate language, but rather an extension to the JavaScript language. It allows developers to write HTML-like markup in their JavaScript code, which is then transpiled to regular JavaScript code by a compiler such as Babel. This means that JSX code can be used alongside regular JavaScript code, making it easy to incorporate ReactJS components into existing projects.

One of the main advantages of using JSX is that it allows developers to create more readable and maintainable code. By combining HTML-like syntax with JavaScript code, developers can write code that is easier to understand and more closely resembles the structure of the final web page. This can also make it easier to debug code, as developers can more easily identify where problems are occurring.

Another advantage of using JSX is that it allows developers to create reusable components that can be easily shared across multiple projects. These components can be thought of as building blocks that can be combined to create more complex web pages. By breaking down a web page into smaller, reusable components, developers can create more modular code that is easier to maintain and update.

To use JSX, developers must first define the elements that will make up their web page. These elements can be written using HTML-like syntax and can include attributes and event handlers. For example, a simple button element might look like this in JSX:In this example, the button element includes an onClick attribute that is set to a function called handleClick. This function will be called when the user clicks the button.

2. Virtual DOM

Virtual DOM is a key feature of ReactJS that enables it to update web pages efficiently and quickly. In traditional web development, when a change is made to a web page, the entire page is re-rendered to reflect the change. This can be slow and resource-intensive, particularly for complex web pages with a large number of elements.

The Virtual DOM is a lightweight copy of the actual DOM (Document Object Model), which is a representation of the web page’s structure and content. When a change is made to the web page, ReactJS updates the Virtual DOM instead of the actual DOM. It then compares the updated Virtual DOM with the previous version to determine which parts of the page need to be updated.

By only updating the necessary parts of the page, ReactJS is able to improve the performance of web applications. This is because updating the Virtual DOM is much faster than updating the actual DOM, which can take a lot of time and resources.

Another benefit of using the Virtual DOM is that it can help to prevent errors and bugs in web applications. When a change is made to the Virtual DOM, ReactJS automatically applies the change to the actual DOM, without the need for developers to manually update the code. This can help to reduce the likelihood of errors and bugs that can be introduced when manually updating the code.

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