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: "Every object created based on this type will inherit these default properties such as toString, valueOf, hasOwnProperty, and so on."

A block of code is set as follows:

function doAddition(num1, num2){
  return num1 + num2;
}
function doSubtraction(num1, num2){
  var result = null;
  if(num1 > num2){
  result = num1 - num2;

  }else{
    result = num2 - num1; 
  }
  return result;
}

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.