Includes appendices, glossary, and index.

CHAPTER 1 Introduction to JavaScript 1 -- CHAPTER 2 Working with Functions, Data Types, and Operators 37 -- CHAPTER 3 Building Arrays and Controlling Flow 77 -- CHAPTER 4 Debugging and Error Handling 117 -- CHAPTER 5 Creating a Web App Using the Document Object Model 163 -- CHAPTER 6 Enhancing and Validating Forms 209 -- CHAPTER 7 Manipulating Data In Strings Arrays, and Other Objects 253 -- CHAPTER 8 Creating Customized Objects, Properties, and Methods 309 -- CHAPTER 9 Managing State Information and Security 363 -- CHAPTER 10 Programming for Touchscreens and Mobile Devices 401 -- CHAPTER 11 Updating Web Pages with Ajax and Fetch 449 -- CHAPTER 12 Introducing jQuery 501 -- APPENDIX A Installing and Configuring a Testing Server 535 -- APPENDIX B Working with HTML and CSS 543 -- APPENDIX C Solutions to Quick Checks Online.

"JavaScript is a client-side scripting language that allows web page authors to develop interactive web pages and sites. Although JavaScript is considered a programming language. It is also a critical part of web page design and authoring. This is because the JavaScript language enables web developers to add functionality directly to web page's elements. The language is relatively easy to learn, allowing non-programmers to quickly incorporate JavaScript functionality into a web page. In fact, because it is used extensively in the countless web pages that are available on the World Wide Web, JavaScript is arguably the most widely used programming language in the world." -- Preface