I’m learning React. In the tic-tac-toe game ( https://reactjs.org/tutorial/tutorial.html ) the index.html file had some event handlers and a div pointing at id=root. But nothing about an index.js file, which has a ReactDOM.render.
What tells the browser to run the index.js code if there is no tag loading it?
This link ( Where’s the connection between index.html and index.js in a Create-React-App application? ) says:
Our configuration specifies that Webpack uses src/index.js as an “entry point”. So that’s the first module it reads, and it follows from it to other modules to compile them into a single bundle.
When webpack compiles the assets, it produces a single (or several if you use code splitting) bundles. It makes their final paths available to all plugins. We are using one such plugin for injecting scripts into HTML.
But if this is the answer, then why should a browser know about webpack, especially as this isn’t mentioned in the minimal index.html file?