Top Beginners tutorial to learn ReactJS in 5 days

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ReactJS is one of the most popular java script library for developing front-end views. The ReachJS Tutorial provides the basic and advanced concepts. The tutorial provides the details about the JavaScript library ReactJS , advantages of ReactJS , Features of ReactJS, ReactJS components, ReactJS installation and Environment setup details, stateless and statefull ReactJS examples, ReactJS props, ReactJS State , ReactJS Forms.

What is ReactJS ?

ReactJS is the java Script library for building user interfaces developed by Jordan Walke , a software engineer at Facebook. ReactJS also termed as “React” is a declarative and efficient java script library which provides “components” for breaking the complex code logic into isolated small codes which are easier to develop and maintain.

Earlier the browsers were using the traditional approach of data flow structure using DOM (Document Object Model) where a change in document requires browsers to remove and add the complete DOM object again for each modification. This DOM approach is repetitive , requires more time for loading the object details, and requires more memory which overall impacts the application performance. With the implementation of Virtual DOM (Java script object) makes ReactJS to perform with high performance as Virtual DOM only changes the individual DOM elements rather than reloading the complete DOM every time which makes it faster to loader the front end view.

ReactJS Audiences

The ReactJS tutorial is for the beginners and professionals who has interest in learning java script library ReactJS. The ReactJS tutorial provides details explanation of the ReactJS components and its usage for developing web based and mobile based scalable applications with ease.

Features of ReactJS

Below given are the features of ReactJS which makes it one of the most popular java script library.

ReactJS Feature NameRectJS Feature Description
License React is licensed under Facebook Inc. (CC BY 4.0) and made it available
to public in May 2013.
DeclarativeReact is declarative and allows to develop interactive UIs
JSXJSX (JavaScript XML) is an extenstion to javascript which allows to write
and add HTML elements into react. JSX Converts HTML tags into react
ComponentsReact provides component based javascript library which allows to split the code logic into small javascript functions maintaining the state and props and provides reusability.
Virtual DOMReact provides in-memory data structure termed as “Virtual DOM” to provide faster execution by updating the changed DOM Structure only instead of reloading complete DOM
Javascript expressionsprovides support for javascript expressions

Advantages of ReactJS

  1. React is an open source java script library and easy to learn supported with good documentation.
  2. Provide development of Rich UI features for both web based and mobile applications.
  3. React is declarative and efficient
  4. Provide easy code maintainability and reusable code with the usage of components feature.
  5. React provides faster application execution with the use of Virtual DOM approach
  6. Provide easy debugging as code is developed using java script.
  7. React provides statefull components with the usage of state and props
  8. React provides easy integration with the external plugins.

Disadvantages of ReactJS

  • Frequent changes in the ReactJS library makes it difficult for developers to keep upgrading with the features and makes it a on -going learning experience.
  • ReactJS covers the “View” part as part of the MVC Architecture and thus need to integrate with other frameworks for application development.
  • JSX being an extension to java script provides the conversion of html tags to react elements and this somehow makes it difficult for developers to understand the react functionality.