Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Notice, how we are using this.props.headings to access the passed information about headings."

A block of code is set as follows:

return <div>
         <h1>Recent Changes</h1>
           <table>
          ….
          </table>
         </div>
…

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

    TestUtils.Simulate.click(submitButton);
    expect(app.state.searching).toEqual(true);
    expect(app.state.searchCompleted).toEqual(false);
    let spinner = TestUtils.findRenderedComponentWithType(app, Spinner);
    expect(spinner).toBeTruthy();

Any command-line input or output is written as follows:

Listening at localhost:9000
Hash: 8ec0d12965567260413b
Version: webpack 1.9.11
Time: 1639ms

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Did you notice the Auto-run JS option?"

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.