React JS Corporate Online Training Course uses JavaScript; This setup requires a core library for the reactors and in fact it requires two separate reactors core and then two separate libraries for the library responsible for rendering it to the dome. And they are also going to write modular code which means we do not have to put our javascript code in a single file so we need some way to bundle our code or make sure the code is bundled. While running this, since most browsers do not currently support ES6 imports, we must bundle the course code for reactjs, which is the default way to set up the project, as reactjs training projects use the web pack. . A webpack is basically a tool that allows you to bundle all assets, such as JavaScript, CSS, into a single file or single file, and then import it into HTML pages, in addition to which the webpack can modify not only the bundled content but also it. So we can load a lot of plug-ins into the webpack tool to write reactjs code in ES6 syntax, JavaScript version and yet all browsers are not supported locally or not all features are supported yet. We need to convert our ES6 code to ES5 code and we use WebPack and Babel for that. Babel is just an ES6 transporter. Reactjs training is about building UIs and building well components, starting with importing React using ES6 import syntax, for which Importing from React is the package name.