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What is reactjs ?

  • ReactJS is JavaScript collection used for building reusable UI components. Description can be initiate on React official documentation −
    • React is a library for building composable user interfaces.
    • It encourages the creation of reusable UI components which present data that changes over time. Lots of people use React as the V in MVC.
    • React extracts away the DOM from you, giving a simpler programming model and better performance.
    • React can also render on the server using Node, and it can power native apps using React Native.
    • React implements one-way reactive data flow which reduces boilerplate and is easier to reason about than traditional data binding.
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React Features

  • JSX − JSX remains JavaScript syntax extension. It isn't necessary to use JSX in React development, but it is recommended.
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    JS vs JSX vs ReactJS - Babel :

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    learn react js - react js tutorial - react js - jsx vs babel -  react js programs
  • Components − React is all about components. You need to think of everything as a component. This will help you to maintain the code when working on larger scale projects.
  • Unidirectional data flow and Flux − React implements one way data flow which makes it easy to reason about your app. Flux is a pattern that helps keeping your data unidirectional.
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      • - As compare to other MVC frameworks/Library Reactjs use the concept of unidirectional data flow.
      • - In Reactjs application the data flow from the parent to the children component by the state and the props.
      • - Only one parent is responsible to update the states and passing the value to the children components via props.
      • - setState is used to update/refresh the UI when the state change and the value can be pass to the children component by the this.props
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  • License − React is licensed under the Facebook Inc. Documentation is licensed under CC BY 4.0.

React Advantages

  • React uses virtual DOM which is JavaScript object. This will improve apps performance since JavaScript virtual DOM is faster than the regular DOM.
  • React can be used on client and server side.
  • Component and Data patterns improve readability which helps to maintain larger apps.
  • React can be used with other frameworks.
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React Limitations

  • React only covers view layer of the app so you still need to choose other technologies to get a complete tooling set for development.
  • React is using inline templating and JSX. This can seem awkward to some developers.

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