If you talk about the most effective front-end development languages of these days, ReactJS is undoubtedly one of them. It is a JavaScript library that was introduced by Facebook. It is used to build reusable UI components. ReactJS uses declarative syntax, which presents changeable data over time. ReactJS follows MVC architecture and provides an exciting & interactive User Experience. ReactJS can also be rendered at the Server side using NodeJS.

React uses a declarative paradigm for which it becomes easier to identify the key features inside an application. Using React, an application becomes both flexible and efficient. When the data is changed inside your App, React renders the same in the finest possible way. If you take the example of Facebook, you will understand how React works on the dynamicity of the data. When you check a post on Facebook and the like or count of comments gets changed dynamically, the reason behind is ReactJS. For having a declarative method, it becomes easier to debug the code.

Let's look into various decisive factor of using React JS as a Front-End development language:
1. React is a facilitator for the overall process of writing the components
In React, you can write your ingredients using JSX syntax. It helps to create new rules and compilation guidelines.

2. React boosts the productivity
Due to the enormous re-usability factor, the components can be built very quickly in React. It has the Wrapper class where different Active Window Toolkit components can be created. All the elements in React have their internal logic, and those are easier to be manipulated by the developers. For this approach, front ends developed with React ensures a consistent App look, and it also facilitates the codebase maintenance and growth

3. React means faster rendering
Dynamic Document Object Modelling is a unique proposition to React. In a high load application, it is imperative to consider how the small changes in the codebase can be impactful to overall user experience and App performance. As React uses Virtual Document Object Modelling, it applies all the changes in VDOM first, compares the total throughput and appearance of the user experience, and then the final output is updated into the DOM. It guarantees better user experience and app performance.

4. Stable Code Base
ReactJS uses downward data flow. Due to this, small changes in child structures do not affect the parents. When the developers change an object, it doesn't impact other components in the tree. Only the particular part gets updated. It is called data binding, and it ensures code stability, which is instrumental for the overall App performance.

5. It is SEO friendly
Compared to other JavaScript programs React is much SEO friendly. While the Search Engine results fail other JS files, React builds an SEO advantage for the Web Apps and Websites. React can run on the Server; it can be rendered, and it returns Virtual DOM to the Server as a regular Webpage.

6. Comes with a developer-friendly toolset
React comes with a very detailed debugging and design toolset, which makes the web developers' jobs much more manageable. The presence of this proper toolset helps in improving the performance of the code, and thus that of the application. In Chrome and Firefox Web browsers, web programmers can observe the React components hierarchies; they can discover child & parent components, can do a thoroughly inspect element with the current state and props.

7. React comes with a Native framework for the Mobile App development
With React, you can build both the Web and Mobile Applications. With React Native, both Android and iOS apps can be developed, and hence it is called a hybrid framework. Android and iOS codes need to be separately compiled to build Android and iOS compatible executable files. Popular mobile apps like Skype, Tesla, Airbnb, and Instagram were built using React Native. React Native is getting a lot of popularity as it has an extensive reusable library, which is highly comparable with the Core Android and iOS default library functions. So, using React Native, you can access a lot of Android and iOS device functions, and the App performance gets almost equivalent, like an App built in Native Language.

8. It is easy to pick up the developers
If a developer knows JavaScript, it will be effortless to pick up the knowledge of the ReactJS framework. Also, React comes with very detailed code documentation and community support, which are instrumental in the learning curve. Just going through the tutorial, a JavaScript programming expert can learn the basics of React, and he/she would be able to construct a Web Application.

Big Companies started using React:
If we talk about App-based Giant businesses like Airbnb, GoDaddy, Bloomberg, Netflix, Dropbox, and many such popular names, they have developed their highly interactive and useful Web and Mobile Apps using React framework. So, you can understand what level of user concurrency can React handle with such a massive volume of Data transaction with compromising on the loading and image or video resolutions. If you have an idea to develop an Over_the_Top Application, React should be the best choice.