Top Free React JS Course

ReactJS is a free, open-source frontend library of JavaScript that aids in building user interfaces or UI components. The ReactJS tool is maintained by Facebook and a community of individual developers and companies. It can be used as a base in the development of mobile applications and single-page applications. It also aids the reuse of UI components. It is a popular and widely used programming language present for many web developers or full-stack developers. It is developed using JavaScript language. Companies like Uber, Airbnb, Facebook, and others use React for their tech stacks.

ReactJS provides high application performance. Its components are used to define what should be displayed on the screen when a complex UI is composed with small and isolated pieces of code called “components”. It allows users/developers to create reusable UI components. Large applications that can change data, without reloading the page can be attained using React JS tool. It is also used to handle view layers for web and mobile applications. Its main purpose is to be fast, scalable, and simple.

Virtual DOM facilitates the fast and flexible development of applications. Replication of web pages in virtual memory is enabled through memory reconciliation algorithms. This way, a virtual DOM represents an original DOM. Virtual DOM re-renders the entire user interface with every modification in the web application. Only the components that changed are updated and not all components in virtual DOM representation. This way, the app development process is quicker and cost-efficient.

JSX, abbreviated as JavaScript XML, is one of the best features of ReactJS. It is a markup syntax that is much similar to that of HTML. It is used to describe the appearance of the UI of an application. Its syntax creates React components and will be injected into the web page. This way coding building blocks of ReactJs is effortless and simple for the developers.

One-way data flow is the major reason why developers choose ReactJS. It uses unidirectional data flow. Developers can’t edit any component directly. Callback function has to be made use of in order to make any changes in the component. This is called one-way data binding. Flux is a JavaScript app architecture that controls the data flow from a single point. The unidirectional flow of data helps developers to gain better control over the web or mobile applications. This way it is more efficient and also enhances the flexibility of the application. 

React native is ReactJS’s custom renderer. Native components are used instead of web components in ReactJS. To make it compatible with Android and iOS platforms, react native converts react code.

The ReactJS free certification course is offered by Great Learning that helps you learn ReactJS from scratch. This course will benefit both working professionals, aspiring students, and any individual to learn ReactJS online and develop applications from this tool.  ReactJS free course will take you through a live session on concepts ranging from a basic level like essentials of UI and reuse of its components to building applications using the tool. This certification course is designed to give you in-depth knowledge of ReactJS. To learn Software development courses in your free time, you can subscribe to one of our courses.   On successful completion of the courses, you will also gain certificates. Happy learning!