Getting Started with React

Knoldus Blogs

React (sometimes called React.js or ReactJS) is an open-source JavaScript library for building user interfaces.

React allows developers to create large web-applications that use data that can change over time, without reloading the page.

It aims primarily to provide speed, simplicity and scalability.

React is flexible. You can create a separate project on react, or you can add it to an existing code base of any framework like Angular.

JSX

First thing you need to know for React is JSX. JSX is a syntax extension of Javascript and it looks like :

It may look like a template language, but it comes with the full power of JavaScript, like you can embed expressions in JSX as well. For eg:

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