There are a number of text conventions used throughout this book.
CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "By wrapping the App component, the BrowserRouter component enriches it with routing capabilities."
A block of code is set as follows:
class Catalog extends React.Component {
constructor() {
super();
When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
import { BrowserRouter } from 'react-router-dom'
ReactDOM.render(
<BrowserRouter>
<App />
</BrowserRouter>
, document.getElementById('root'));
Any command-line input or output is written as follows:
create-react-app --version
Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Now we need to create a view to display the Catalog component or the About page."
Activity: These are scenario-based activities that will let you practically apply what you've learned over the course of a complete section. They are typically in the context of a real-world problem or situation.
Warnings or important notes appear like this.