[...]... business problems faced by Web developers everywhere What Does This Book Cover? Professional JavaScript for Web Developers provides a developer-level introduction along with the more advanced and useful features of JavaScript Starting at the beginning, the book explores how JavaScript originated and evolved into what it is today A detailed discussion of the components that make up a JavaScript implementation... practical are ranges? Summary Chapter 11: Forms and Data Integrity Form Basics Scripting the Element Getting form references Accessing form fields Form field commonalities Focus on the first field Submitting forms Submit only once Resetting forms Text boxes Retrieving/changing a text box value Selecting text Text box events Select text automatically Tab forward automatically Limit textarea characters... messages other users post You can read messages at any time on the Web If you would like to have new messages from a particular forum e-mailed to you, click the Subscribe to This Forum icon by the forum name in the forum listing For more information about how to use the Wrox P2P, be sure to read the P2P FAQs for answers to questions about how the forum software works as well as to see many common questions... itself JavaScript is very loosely based on Java, an object-oriented programming language popularized for use on the Web by way of embedded applets Although JavaScript has a similar syntax and programming methodology, it is not a “light” version of Java Instead, JavaScript is its own language, finding its home in Web browsers around the world and enabling enhanced user interaction on Web sites and Web. .. Practical Uses Summary Chapter 17: Web Services A Quick Web Service Primer What is a Web service? WSDL 502 505 506 507 509 509 509 510 Web Services in Internet Explorer 513 Using the WebService component WebService component example 513 515 Web Services in Mozilla 516 Enhanced privileges Using the SOAP methods Using WSDL proxies 517 518 522 A Cross-Browser Approach 525 The WebService object The Temperature... For? This book is aimed at three groups of readers: ❑ Experienced developers familiar with object-oriented programming who are looking to learn JavaScript as it relates to traditional OO languages such as Java and C++ ❑ Web application developers attempting to enhance the usability of their Web sites and Web applications ❑ Novice JavaScript developers aiming to better understand the language In addition,... for use with JavaScript 19 Deployment Issues This chapter focuses on what happens after the completion of JavaScript coding Specifically, it describes what should happen before you deploy a JavaScript solution on either a Web site or in a Web application Topics covered include security issues, internationalization, optimization, intellectual property protection, and Section 508 compliance 20 xxiv Forms... ECMAScript for XML 605 Approach The for each in Loop New classes Implementations 605 607 607 616 Summary Index xx 616 617 Introduction Although once supported by Netscape Enterprise Server and Active Server Pages (ASP) on the server, JavaScript is primarily a client-side scripting language for use in Web browsers Its main focus today is to help developers interact with Web pages and the Web browser... content of a Web page without reloading it This represented a tremendous step forward in Web technology, but also a huge problem Netscape and Microsoft each went its own way in developing DHTML, thus ending the period when Web developers could write a single HTML page that could be accessed by any Web browser It was decided that something had to be done to preserve the cross-platform nature of the Web The... Explorer 5.5 or higher (Windows), Mozilla 1.0 or higher (all platforms), Opera 7.5 or higher (all platforms), or Safari 1.2 or higher (Mac OS X) The complete source code for the samples is available for download from the Web site at http://www.wrox.com/ How Is This Book Structured? 1 xxii What Is JavaScript? This chapter explains the origins of JavaScript: where it came from, how it evolved, and what it . AM Page ii Professional JavaScript ™ for Web Developers 01_579088 ffirs.qxd 3/28/05 11:33 AM Page i 01_579088 ffirs.qxd 3/28/05 11:33 AM Page ii Professional JavaScript ™ for Web Developers Nicholas. Web Services 509 A Quick Web Service Primer 509 What is a Web service? 509 WSDL 510 Web Services in Internet Explorer 513 Using the WebService component 513 WebService component example 515 Web. 333 Summary 333 Chapter 11: Forms and Data Integrity 335 Form Basics 335 Scripting the <form/> Element 337 Getting form references 337 Accessing form fields 338 Form field commonalities 338 Focus