Sams Teach Yourself JavaScript in 21 Days

Sams Teach Yourself JavaScript in 21 Days


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Sams Teach Yourself JavaScript in 21 Days by Jonathan A. Watt, Andrew H. Watt, Jinjer Simon

The aim of Sams Teach Yourself JavaScript in 21 Days is to tutor the Web-literate novice JavaScripter through to a high level of competency in applying JavaScript to Web pages.

In addition to core uses of client-side JavaScript, Sams Teach Yourself JavaScript in 21 Days also covers emerging topics such as the use of JavaScript with PDFs and the scripting of Scalable Vector Graphics (SVG).

The key principles taught throughout the book are backed up with clear and useful examples. This enables the reader to easily apply what they¿ve learned with confidence in order to meet their own coding needs.

Product Details

ISBN-13: 9780672322976
Publisher: Sams
Publication date: 05/13/2002
Series: Sams Teach Yourself Series
Pages: 755
Product dimensions: 7.30(w) x 9.10(h) x 2.00(d)

About the Author

Andrew Watt is an independent consultant and author with expertise in XML and Web technologies including SVG. He is author of Designing SVG Web Graphics (New Riders) and XPath Essentials (Wiley). He is co-author of XML Schema Essentials (Wiley) and contributing author to XHTML, XML & Java 2 Platinum Edition (Que), Professional XSL, Professional XML 2nd Edition, and Professional XML Meta Data (Wrox).

Jonathan Watt has been working with JavaScript for two years and has been Webmaster of the Strathclyde University Skills Society Web site, as well as a number of his own Web sites such as His primary expertise is in the application of JavaScript in the client-side environment, but he also has used ASP and PHP to create database-driven Web sites. He is currently in the third year of a master's degree in engineering at Strathclyde.

Jinjer Simon has been actively involved in the computer industry for the past 17 years. Her involvement in the industry has included programming, providing software technical support, end-user training, developing written and online user documentation, creating software tutorials, developing Internet Web sites, and writing technical books. Jinjer and her husband currently live in Coppell, Texas, with their two children where she currently works as a consultant for MillenniSoft Inc. by providing Web site development and online documentation development.

Jim O'Donnell was born on October 17, 1963, in Pittsburgh, Pennsylvania (you may forward birthday greetings to After a number of unproductive years, he went to Rensselaer Polytechnic Institute for 11 years earning three degrees. He now lives in Washington, DC, and spends most of his time building spacecraft. He has been writing and editing books for eight years. When he isn't working, he collects comic books and PEZ dispensers and plays ice hockey for the DC Nationals. Go, Nats!

Table of Contents



Day 1. Getting the Basics Right.

Introducing JavaScript. JavaScript in Context. Selecting the Right Technology. JavaScript, Jscript, and ECMAScript. Let's Get Started. Data Types. Some Useful Tools.

Day 2. Working with Data.

Simple Data Storage. Operators. JavaScript Operators.

Day 3. Functions and Statements.

User Defined Functions. Predefined Global Functions. What Is a Statement? Control Statements. Loop Statements.

Day 4. JavaScript Is Object-Based.

Understanding Objects. Client-Side JavaScript Objects. The document Object. Environment Objects. Core JavaScript Objects. Exploring an Object.

Day 5. An Introduction to Arrays.

What Is an Array? Creating an Array. Accessing Arrays. Array Properties. Array Methods. Associative Arrays. Storing Objects in Array Elements.

Day 6. HTML Forms and the String Object.

Collecting Data from HTML Forms. Form Elements. The String Object. Checking User Input.

Day 7. Numbers and Math.

The Number Object. The Math Object. Predefined Properties. Methods of the Math Object. Creating Your Own Math Functions.


Day 8. The Browser Issue.

Different Browsers, Different JavaScript. Cross-Browser Compatible Scripting. The W3C DOM.

Day 9. Date and Time Manipulation.

JavaScript and Dates. The Date Object. Date Formatting. Time Formatting. Converting Date and Time Formats.

Day 10. Events and Event Handling.

Understanding Events. Creating an Event Handler. Types of Events. How to Handle Events.

Day 11. Dynamic HTML.

What is DHTML? Using Cascading Style Sheets. Working with Layers. Changing Attributes of an HTML Element. Moving Things

Day 12. Windows and Frames.

What Are Windows and Frames? Determining Window Location. Working with Window History. Working with the Status Line. Using the Screen Object. Working with Frames. Working with Popups.

Day 13. Regular Expressions Make It Easier.

Why Regular Expressions Are Useful. What Is a Regular Expression? Some Simple Patterns. Regular Expressions Overview. Defining Regular Expressions. Quantifiers. The Methods of the RegExp Object. The Properties of the RegExp Object.

Day 14. Advanced Array Management.

The Array Object's Methods. Multidimensional Arrays.


Day 15. Debugging and Error Handling.

Preventing and Classifying JavaScript Errors. Finding Syntax Errors. Debugging Load-Time Errors. Debugging Run-Time Errors I: Discrete Events. Debugging Run-Time Errors II: Continuous Events. Advanced Debugging Techniques. Using JavaScript Debuggers.

Day 16. Cookies: Storing Persistent Data.

Maintaining State. Cookies: An Introduction. Using Cookies. Other State Maintenance Options.

Day 17. Privacy and Security.

Privacy for Web Users. Privacy for Webmasters. Privacy Impact on JavaScript.

Day 18. Plugins and Applets.

Plugins Versus Applets. Detecting Plugin Installation. Working with Plugin Objects. Working with Applets.

Day 19. Creating Your Own Objects.

What Is a Custom Object? Use of the Constructor to Create Objects. Creating an Instance of a Custom Object. Creating Object Methods. Linking Objects Together.

Day 20. JavaScript in E-Commerce.

Requirements for an E-Commerce Site. Shop Structure. The Online Catalog. Shopping Carts.

Day 21. JavaScript and SVG.

Overview of Scalable Vector Graphics. Example SVG Code. The SVG Document Object Model. Using JavaScript in SVG. JavaScript Beyond Declarative Animation. Interaction Between the HTML and SVG DOM. Finding Out More About SVG.


Appendix A. New Features in JavaScript 1.5.

Number Formatting Additions. Runtime Error Messages. Regular Expressions. Conditional Function Declarations. Functions Can Be Declared Within an Expression. Multiple Catch Clauses.

Appendix B. Color Codes.

Color Names Specified as Plain-Language. Hexadecimal Color Value. RGB Color Values.

Appendix C. Functions Reference.

abs(). acos(). asin(). atan(). atan2(). atob(). Boolean(). btoa(). captureEvents(). catch(). ceil(). cos(). Date(). decodeURI(). decodeURIComponent(). encodeURI(). encodeURIComponent(). Error(). escape(). eval(). exp(). floor(). Function(). GetObject(). handleEvent(). isFinite(). isNaN(). log(). max(). min(). Number(). Object(). parseFloat(). parseInt(). pow(). random(). releaseEvents(). rgb(). round(). routeEvents(). ScriptEngine(). sin(). sqrt(). tan(). toString(). unescape(). unwatch(). watch().

Appendix D. Resources Online.

JavaScript. Java and Java Applets. HTML. CGI.

Appendix E. A Short History of JavaScript.


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