Conventions

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

Code words in text are shown as follows: " The key/value pairs are divided by colons, in the format key: value ."

A block of code will be set as follows:

var book = {
  name: 'Catch-22',
  published: 1961,
  author: {
    firstname: 'Joseph',
    lastname: 'Heller'
  }
};

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

function TwoDShape(){}
// take care of inheritance
TwoDShape.prototype = Shape.prototype;
TwoDShape.prototype.constructor = TwoDShape;

New terms and important words are introduced in a bold-type font. Words that you see on the screen, in menus or dialog boxes for example, appear in our text like this: "clicking the Next button moves you to the next screen".