Book Image

Javascript Regular Expressions

Book Image

Javascript Regular Expressions

Overview of this book

This book is ideal for JavaScript developers and programmers who work with any type of user entry data and want sharpen their skills to become experts.

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Javascript Regular Expressions
May, 2015 | 112 pages
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Table of Contents (8 chapters)
Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Getting Started with Regex
1. Getting Started with Regex
It's all about patterns
Regex in JavaScript
Building our environment
Summary
2
2. The Basics
2. The Basics
Defining vague matchers in Regex
Defining ranges in Regex
Defining multipliers in Regex
Defining custom quantifiers
Matching alternated options
Creating a Regex for a telephone number
Summary
3
3. Special Characters
3. Special Characters
Nonvisual constraints
Defining nongreedy quantifiers
Matching groups in Regex
Summary
4
4. Regex in Practice
4. Regex in Practice
Regular expressions and form validation
Validating fields
Manipulating data
Summary
5
5. Node.js and Regex
5. Node.js and Regex
Setting up Node.js
Getting started with our application
The anatomy of an Apache log file
Summary
6
A. JavaScript Regex Cheat Sheet
A. JavaScript Regex Cheat Sheet
Character classes
Character sets
Boundaries
Grouping, alternation, and back reference
Quantifiers
JavaScript regular expressions methods
7
Index
Index

Setting up Node.js

Since we will be developing a Node.js application, the first step is to have Node.js installed. We can get it from http://nodejs.org/download/. Just follow the download instructions and we will have it set up on our computer.

Note

If this is your first time working with Node.js, please go through the tutorials at https://nodejs.org/.

To make sure we have Node.js installed, open the terminal application (Command Prompt, if you're using Windows), and type node –v. The Node.js version installed should be displayed as follows:

We are now good to go!

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