What this book covers

Chapter 1, Getting Started with Regex, presents an introduction about regular expressions in JavaScript. It also shows how to develop the program that will be used to test the regular expressions used in the first three chapters.

Chapter 2, The Basics, covers the main features of regular expressions in JavaScript, which are vague matchers, multipliers, and ranges.

Chapter 3, Special Characters, dives into the special characters patterns of Regex. It covers defining boundaries for a Regex, defining nongreedy quantifiers, and defining Regex with groups.

Chapter 4, Regex in Practice, demonstrates how to develop a web form and validate all its fields using regular expressions functionalities learned since the first chapter.

Chapter 5, Node.js and Regex, explains step by step how to create a simple application using Node.JS to read and parse an Apache log file using Regex. It also demonstrates how to display the information from the log file into a friendly web page to the user.

Appendix, JavaScript Regex Cheat Sheet, presents a summary of the patterns used in regular expressions in JavaScript along with their descriptions, and a list of useful methods to test and create regular expressions.