The book "Regular Expression in Javascript" makes a relatively tough subject very easy to understand. After reading this book you should be able to understand the regular expressions codes in existing code and will be able to write your own regular expressions. * Understand the basics of regular expressions through a concise tutorial * Use regular expressions effectively in several programming and scripting languages. The book also has an introductory tutorial in Javascript. After reading this book you will be able to * Learn and write small javascript codes. * Learn how to validate input in forms in javascript. * Find solutions for common problems that requires the use of regular expression in javascript. * Learn how regular expression makes task easier in javascript