Learn the key concepts behind React and how to use JSX elements and components to build lean and fast web front ends React, also known as ReactJS, is an open source JavaScript library for building ...

To build a web app using React, you need a way to convert your JSX into plain old JavaScript that your browser can understand (see Figure 2). Pearson Addison-Wesley Figure 2.

The whole point of creating a Hello World React program is to ensure your Node.js environment works, quickly examine the basic structure of a library or framework, and address any configuration issues ...