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React Js

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What is React and It's Features?

What is React

React is an open-source javascript library for building user interfaces(UI) of web applications. React has also been extended as React Native for building UI for native mobile applications.

React is in the list of most famous and capable front-end technologies. Because it allows to create interactive, rich and responsive UI in a very easy and convenient way. Inside a

web application React is only reasposible for the look and feel of the UI because it is only reasposible for application`s view layer.


HISTORY


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What is State in Reactjs?

The state is a built-in React object that is used to contain data or information about the component.

A component’s state can change over time; whenever it changes, the component re-renders.

State is an object that holds some information, which can be used across requests.

React Class component is by default configured with state. It can use the state object of “React.Component” base class.

Functional components are not configured with state.

  • A state can be modified based on user action or network changes.


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What is props in Reactjs?

Properties [props] in Components

Properties are used to store data.

Properties can change the structure according to state and situation.

Component uses properties to change the behaviour according to state and situation.

You can re-use the component with different data.

Properties are configured in Functional Components and Class Component


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Create React App

Step to create first React App

Step 1: In order to learn and test React, you should set up a React Environment on your computer.

Step 2: The create-react-app is an officially supported way to create React applications.


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