Prerequisites For Learning React js? What should I know Before Starting React js?

ReactJS is the most widely used JavaScript library among front-end developers, and its acceptance is growing daily. The website using ReactJS looks stunning, and most inexperienced developers are drawn to ReactJs (created by Facebook). However, many developers and experts make the mistake of starting with ReactJS (or another library and framework) without understanding the prerequisites. Before starting into React, there are a few prerequisites for learning React Js and basic ideas you should be aware of, which we will cover in this article. These fundamental ideas will also assist you in the future while learning different JavaScript frameworks and libraries.

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What Is React Js?

A JavaScript library called React makes it possible for new user interface (UI) components to show up on websites and applications without requiring a page refresh. It was developed by Meta Software Engineer Jordan Walke to speed up Facebook’s News Feed loading. Later, for the public’s benefit, it was included to Instagram and made open-source. These days, most websites and apps use it as one of their go-to Javascript libraries.

Because of React’s adaptability and agility, most people use it for web and mobile development. In order to produce new content or graphics, a website or app usually has to retrieve data from its server. Thanks to React, reusable components may be added to a page as the user scrolls, saving websites and apps from having to go through that step. The user as well as the website both benefit from time and computer power savings.

Advantages Of React Js

• React.js creates a virtual DOM that is tailored. App performance will improve since the JavaScript virtual DOM loads faster than the traditional DOM.
• A fantastic UI is made possible via ReactJS.
• Favorable to search engines
• Larger apps are easier to manage because they are more readable thanks to modules and reliable data.
• Different architectures are integrated by React.
• The entire scripting environment process is simplified with React.
• It increases output and facilitates sophisticated maintenance.
• Ensures speedier completion
• The best thing about React is that there is a script available for creating mobile apps.
• ReactJS has a sizable community behind it.

Prerequisites for Learning ReactJS

It’s crucial to lay a strong foundation in a few essential areas before you start creating React apps. Gaining a solid understanding of these fundamentals will improve your learning experience and enable you to create React projects that are reliable and easy to maintain. In this section we are including some of the essential prerequisites for learning React Js.

HTML And CSS

HTML and CSS are the first tools used by any front-end developer. Consequently, you should be proficient in HTML and CSS writing before you begin learning React. You should be able to create front-end apps using HTML and CSS, write semantic HTML tags, write CSS selectors, use classes, implement a CSS reset, box model, reset to border-box, and flexbox, and design responsive web applications with media queries.

JSX (Javascript XML) & Babel

Before learning React, you should have a thorough understanding of what JSX is. It seems like HTML flavoured javascript. It is the simplest method for including HTML code into JavaScript, or you might refer to it as an extension of the syntax for the JavaScript language.

Node Package Manager

JavaScript applications are installed and managed in part by the Node Package Manager. Just like with Node.js, installing NPM is simple. The submitted file is stored in the NPM registry.

Developers can obtain the tools they need to create software from the NPM registry. Therefore, you should be well-versed with the NPM (Node package manager) registry and how to utilize NPM to install packages before using ReactJS.

Fundamentals Of Javascript And ES6

JavaScript is one of the languages that programmers find the most confusing. JavaScript must be learned before attempting to learn ReactJS. Compared to previous frontend solutions, React uses a lot of JavaScript. The ECMAScript2015 standard, often known as ES6, is used by scripting languages such as JavaScript, ActionScript, and JScript. Its original purpose was to standardize JavaScript. Some of the ES6 features should be aware is provided below:

• Let and Const
• Arrow functions
• Default parameters
• spread attributes
• Maps
• Sets
• Static methods
• Getters and Setters.

Fundamental Knowledge About MVC/MVVM Architecture

Although the architecture of React.js is component-based, a fundamental knowledge of Model-View-Controller (MVC) or Model-View-ViewModel (MVVM) architecture might help you organize the structure of your React application.

Git and CLI (Command Line Interface)

Git (version control), which enables developers to store their projects on GitHub, Bitbucket, and GitLab (a code hosting platform), is another crucial prerequisite for developers. It allows developers to host and monitor several project file versions in addition to collaborating and working together. You may implement several ReactJS capabilities, like installing packages, utilizing NPM, creating and executing React apps, and many more, with the help of the CLI (Command-line interface).

Fundamentals Of web Development

Developing React apps that communicate with servers or outside data sources can benefit from an understanding of web development principles like as DOM manipulation, HTTP requests, RESTful APIs, and asynchronous programming (e.g., Promises, async/await).

Responsive Web Design

Comprehending the fundamentals of flexible web design and being acquainted with frameworks such as Bootstrap or CSS Grid will facilitate the development of aesthetically pleasing and adaptable React applications.

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Conclusion

A solid understanding of the majority of these topics will help your learning of React.js go more smoothly, even though it’s not strictly required to know everything beforehand. You’ll be ready to begin learning React.js and creating dynamic web applications as soon as you’re familiar with these prerequisites.

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