TOC Frameset--The Official Netscape JavaScript Book

Your browser doesn't work with frames, which means it won't work with JavaScript, either. You need a JavaScript-enabled browser (currently that means either Netscape Navigator or Internet Explorer) in order to use the examples at this site. <body> <h1>The Official Netscape JavaScript Book</h1> <h3>by Peter Kent and John Kent</h3> <i>The Official Netscape JavaScript Book</i> contains many examples, little and not-so-little pieces of script that we've used to teach JavaScript. The Online Companion contains all of these scripts--you can copy them directly from the Online Companion using your browser's Copy command, and paste them into your HTML editing program.</p> <p>Use the following links to go to the examples scripts we used, and to other Web pages referenced in the book.</p> <h2>Chapter 1: What is JavaScript?</h2> <p><a href="ch01.htm">Links mentioned in Chapter 1</a></p> <h2>Chapter 2: Quick and Easy JavaScript Tricks</h2> <ul> <li><a href="2-1.htm">Example 2.1: Placing a Modified Date in Your Web Pages</a> </li> <li><a href="2-2.htm">Example 2.2: Hiding Scripts</a> </li> <li><a href="2-3.htm">Example 2.3: What Page Has the Reader Come From?</a> </li> <li><a href="2-4.htm">Example 2.4: Opening Secondary Windows</a> </li> <li><a href="2-5.htm">Example 2.5: Navigation Buttons</a> </li> <li><a href="2-6.htm">Example 2.6: Welcome Messages</a> </li> <li><a href="2-7.htm">Example 2.7: Welcome Messages (Using onload)</a> </li> <li><a href="2-8.htm">Example 2.8: Departure Messages</a> </li> <li><a href="2-9.htm">Example 2.9: Status Bar Messages</a> </li> <li><a href="2-10.htm">Example 2.10: Information Boxes in Forms</a> </li> <li><a href="2-11.htm">Example 2.11: Automatically Forwarding Readers</a> </li> <li><a href="2-12.htm">Example 2.12: Automatically Forwarding--With a Confirm Dialog Box</a> </li> </ul> <h2>Chapter 3: First Steps with JavaScript--Scripts, Functions, & Comments</h2> <ul> <li><a href="3-1.htm">Example 3.1: Two Simple Scripts</a> </li> <li><a href="3-2.htm">Example 3.2: A Quick Look at Functions</a> </li> <li><a href="3-3.htm">Example 3.3: Calling the Function</a> </li> <li><a href="3-4.htm">Example 3.4: Comment Lines</a></li> <li><a href="3-5.htm" target="_top">Example 3.5: The <NOSCRIPT> Tag</a> </li> <li><a href="3-6.htm" target="_top">Example 3.6: Using the SRC= Attribute</a> </li> </ul> <h2>Chapter 4: Variables and Literals</h2> <ul> <li><a href="4-1.htm">Example 4.1: Variables</a> </li> <li><a href="4-2.htm">Example 4.2: Variable Names are Case Sensitive</a> </li> <li><a href="4-3.htm">Example 4.3: Undefined Variables</a> </li> <li><a href="4-4.htm">Example 4.4: The Scope of Variables</a> </li> <li><a href="4-5.htm">Example 4.5: Why You Should Use Var</a> </li> <li><a href="4-6.htm">Example 4.6: Why You Should Use Var--Fixed Example</a> </li> <li><a href="4-7.htm">Example 4.7: Special Characters in String Literals</a> </li> </ul> <h2>Chapter 5: Expressions and Operators--Manipulating Values</h2> <ul> <li><a href="5-1.htm">Example 5.1: Adding</a> </li> <li><a href="5-2.htm">Example 5.2: Subtracting</a> </li> <li><a href="5-3.htm">Example 5.3: Multiplying</a> </li> <li><a href="5-4.htm">Example 5.4: Dividing</a> </li> <li><a href="5-5.htm">Example 5.5: Modulus--Dividing and Discarding</a> </li> <li><a href="5-6.htm">Example 5.6: Incrementing Variable Values</a> </li> <li><a href="5-7.htm">Example 5.7: Decrementing Variable Values</a> </li> <li><a href="5-8.htm">Example 5.8: String Operators--the Concatenation Operator</a> </li> <li><a href="5-9.htm">Example 5.9: The Logial Operators--Not</a> </li> <li><a href="5-10.htm">Example 5.10: The Logical Operators--And</a> </li> <li><a href="5-11.htm">Example 5.11: The Logical Operators--Or</a> </li> <li><a href="5-12.htm">Example 5.12: Operator Precedence</a> </li> <li><a href="5-13.htm">Example 5.13: Type Conversion</a> </li> <li><a href="5-14.htm">Example 5.14: Type Conversion--Subtracting Strings and Numerics</a> </li> <li><a href="5-15.htm">Example 5.15: Type Conversion--"Subtracting" with Text</a> </li> <li><a href="5-16.htm">Example 5.16: Type Conversion--"Multiplying" with Text</a> </li> </ul> <h2>Chapter 6: Loops & Conditionals--Making Decisions & Controlling Scripts</h2> <ul> <li><a href="6-1.htm">Example 6.1: The 'if' Statement</a> </li> <li><a href="6-2.htm">Example 6.2: Using = Instead of ==</a> </li> <li><a href="6-3.htm">Example 6.3: If Statements with Boolean Variables</a> </li> <li><a href="6-4.htm">Example 6.4: Using "else"</a> </li> <li><a href="6-5.htm">Example 6.5: An if Statement Without Brackets</a> </li> <li><a href="6-6.htm">Example 6.6: Using "Not Equal To" (!=)</a> </li> <li><a href="6-7.htm">Example 6.7: The "Greater Than" Operator (>)</a> </li> <li><a href="6-8.htm">Example 6.8: Greater Than or Equal To (>=)</a> </li> <li><a href="6-9.htm">Example 6.9: Nesting if Statements</a> </li> <li><a href="6-10.htm">Example 6.10: Boolean Operators</a> </li> <li><a href="6-11.htm">Example 6.11: Boolean "Not"</a> </li> <li><a href="6-12.htm">Example 6.12: The "?" Operator--a Shorthand 'if' Statement</a> </li> <li><a href="6-13.htm">Example 6.13: A 'for' Loop</a> </li> <li><a href="6-14.htm">Example 6.14: Mimicking a 'for' Loop with Nested if Statements</a> </li> <li><a href="6-15.htm">Example 6.15: A 'while' Loop</a> </li> <li><a href="6-16.htm">Example 6.16: A 'while' Loop Without a Counter</a> </li> <li><a href="6-17.htm">Example 6.17: Breaking Out of Loops--break</a> </li> <li><a href="6-18.htm">Example 6.18: Returning to the Top of The Loop--continue</a> </li> </ul> <h2>Chapter 7: More on Functions</h2> <ul> <li><a href="7-1.htm">Example 7.1: Defining Functions</a> </li> <li><a href="7-2.htm">Example 7.2: A Function Defined in the Wrong Place</a> </li> <li><a href="7-3.htm">Example 7.3: Defining Functions--Problem Fixed</a> </li> <li><a href="7-4.htm">Example 7.4: Returning Values</a> </li> <li><a href="7-5.htm">Example 7.5: Returning Values--Broken Example</a> </li> <li><a href="7-6.htm">Example 7.6: Multiple Returns</a> </li> <li><a href="7-7.htm">Example 7.7: Passing Values to Functions</a> </li> <li><a href="7-8.htm">Example 7.8: Passing Multiple Values</a> </li> <li><a href="7-9.htm">Example 7.9: Call By Value</a> </li> <li><a href="7-10.htm">Example 7.10: Working with Multiple Functions</a> </li> <li><a href="7-11.htm">Example 7.11: Built-in Functions--eval</a> </li> <li><a href="7-12.htm">Example 7.12: Built-in Functions--parseInt</a> </li> <li><a href="7-13.htm">Example 7.13: Built-in Functions--parseFloat</a> </li> <li><a href="7-14.htm">Example 7.14: Built-in Functions--escape</a> </li> <li><a href="7-15.htm">Example 7.15: Built-in Functions--unescape</a> </li> </ul> <h2>Chapter 8: Troubleshooting and Avoiding Trouble</h2> <ul> <li><a href="8-1.htm">Example 8.1: You Don't (Always) Need Spaces</a> </li> </ul> <h2>Chapter 9: Building Arrays</h2> <ul> <li><a href="9-1.htm">Example 9.1: Creating and Checking an Array</a> </li> <li><a href="9-2.htm">Example 9.2: Creating and Checking an Array II</a> </li> <li><a href="9-3.htm">Example 9.3: Select One Array, See Another</a> </li> <li><a href="9-4.htm">Example 9.4: A Shortcut to Array Creation</a> </li> <li><a href="9-5.htm">Example 9.5: Exceeding the Array Length</a> </li> </ul> <h2>Chapter 10: Objects, Properties, and Methods</h2> <ul> <li><a href="10-1.htm">Example 10.1: Objects and Properties--the navigator Properties</a> </li> <li><a href="10-2.htm">Example 10.2: Setting the bgColor Property</a> </li> <li><a href="10-3.htm">Example 10.3: Using Methods</a> </li> <li><a href="10-4.htm">Example 10.4: Referring to Objects</a> </li> <li><a href="10-5.htm" target="_top">Example 10.5: Using Arrays to Refer to Forms</a> </li> <li><a href="10-6.htm" target="_top">Example 10.6: Getting the forms Array's length property</a> </li> <li><a href="10-7.htm" target="_top">Example 10.7: Using Arrays to Refer to Form Elements</a> </li> <li><a href="10-8.htm" target="_top">Example 10.8: window.location and document.location</a> </li> <li><a href="10-9.htm" target="_top">Example 10.9: Object Hierarchy</a> </li> </ul> <h2>Chapter 11: More About Objects</h2> <ul> <li><a href="11-1.htm">Example 11.1: Creating Date Object Instances</a> </li> <li><a href="11-2.htm">Example 11.2: Using Date Object Methods</a> </li> <li><a href="11-3.htm">Example 11.3: Math Methods--Using max</a> </li> <li><a href="11-4.htm">Example 11.4: Math Methods--Using PI and sqrt</a> </li> <li><a href="11-5.htm">Example 11.5: String Objects</a> </li> <li><a href="11-6.htm">Example 11.6: Modifying String Appearances</a> </li> <li><a href="11-7.htm">Example 11.7: Object Properties are Sometimes Strings</a> </li> </ul> <h2>Chapter 12: JavaScript Events--When are Actions Carried Out?</h2> <ul> <LI><A HREF="12-1.htm" TARGET="_top">Example 12.1: onblur: Form Validation</A> <LI><A HREF="12-2.htm" TARGET="_top">Example 12.2: onchange: Form Validation</A> <LI><A HREF="12-3.htm" TARGET="_top">Example 12.3: onfocus: Form Modification</A> <LI><A HREF="12-4.htm" TARGET="_top">Example 12.4: onload: Asking the User Where to Go</A> <LI><A HREF="12-5.htm" TARGET="_top">Example 12.5: onmouseover: An Alert Box on a Link</A> <LI><A HREF="12-6.htm" TARGET="_top">Example 12.6: onselect: Displaying an Alert Box</A> <LI><A HREF="12-7.htm" TARGET="_top">Example 12.7: onsubmit: Displaying an Alert Box</A> <LI><A HREF="12-8.htm" TARGET="_top">Example 12.8: onsubmit: Form Validation</A> <LI><A HREF="12-9.htm" TARGET="_top">Example 12.9: onunload: Not Always So Useful</A> <LI><A HREF="12-10.htm" TARGET="_top">Example 12.10: onabort: When the User Clicks Stop</A> </ul> <h2>Chapter 13: Advanced Topics</h2> <ul> <li><a href="13-1.htm" target="_top">Example 13.1: Creating Objects</a> </li> <li><a href="13-2.htm" target="_top">Example 13.2: Creating an Object Hierarchy--Properties Can be Objects</a> </li> <li><a href="13-3.htm" target="_top">Example 13.3: Creating Methods</a> </li> <li><a href="13-4.htm" target="_top">Example 13.4: Cookies</a> </li> <li><a href="13-5.htm" target="_top">Example 13.5: Using the Object Array to View Properties</a> </li> </ul> <h2>Chapter 14: Controlling Windows and Documents with JavaScript</h2> <ul> <li><a href="14-1.htm">Example 14.1: Referring to Windows</a> </li> <li><a href="14-2.htm">Example 14.2: Configuring the Window--A Complete Window</a> </li> <li><a href="14-3.htm">Example 14.3: Configuring the Window--Just the Location Bar</a> </li> <li><a href="14-4.htm">Example 14.4: Configuring the Window--Mix and Match</a> </li> <li><a href="14-5.htm">Example 14.5: The Problem with Links</a> </li> <li><a href="14-6.htm">Example 14.6: Closing Secondary Windows</a> </li> <li><a href="14-7.htm">Example 14.7: Opening and Writing to a Window</a> </li> <li><a href="14-8.htm">Example 14.8: Writing to a Window and Changing Focus</a> </li> <li><a href="14-9.htm">Example 14.9: Clearing the Web Page Before Writing to a Window</a> </li> <li><a href="14-10.htm">Example 14.10: Opening the Document Stream</a> </li> <li><a href="14-11.htm">Example 14.11: Closing the Document Stream</a> </li> <li><a href="14-12.htm">Example 14.12: Clearing the Window</a> </li> <li><a href="14-13.htm">Example 14.13: Embedding Images in the Document</a> </li> <li><a href="14-14.htm">Example 14.14: Controlling Background Colors</a> </li> <li><a href="colors.htm">***The Color Chart***</a> </li> <li><a href="14-15.htm">Example 14.15: Creating a Slide Show</a> </li> <li><a href="14-16.htm">Example 14.16: Stopping a Slide Show</a> </li> <li><a href="14-17.htm">Example 14.17: Picking Your Destination</a> </li> <li><a href="14-18.htm">Example 14.18: Confirmation Box on a Link</a> </li> </ul> <h2>Chapter 15: Using JavaScript with Frames</h2> <ul> <li><a href="15-1.htm">Example 15.1: Creating Frames with HTML</a> </li> <li><a href="15-2.htm">Example 15.2: More Complicated Frames</a> </li> <li><a href="15-3.htm">Example 15.3: Referring to Frames</a> </li> <li><a href="15-4.htm">Example 15.4: Using top</a> </li> <li><a href="15-5.htm">Example 15.5: Changing Frame Contents with HTML</a> </li> <li><a href="15-6.htm">Example 15.6: Changing Frame Contents with JavaScript</a> </li> <li><a href="15-7.htm">Example 15.7: Using document.close</a> </li> <li><a href="15-8.htm">Example 15.8: Calling Functions from Another Frame</a> </li> </ul> <h2>Chapter 16: Building Forms with JavaScript</h2> <ul> <li><a href="16-1.htm" target="_top">Example 16.1: Passing Data From Forms to Functions</a> </li> <li><a href="16-2.htm" target="_top">Example 16.2: You Can't Name a Form Within a Function</a> </li> <li><a href="16-3.htm" target="_top">Example 16.3: You Don't Have to Pass Information</a> </li> <li><a href="16-4.htm" target="_top">Example 16.4: Passing Text From One Form to Another</a> </li> <li><a href="16-5.htm" target="_top">Example 16.5: Verifying That a Number is Within a Range</a> </li> <li><a href="16-6.htm" target="_top">Example 16.6: Is it a Number?</a> </li> <li><a href="16-7.htm" target="_top">Example 16.7: How Long is it?</a> </li> <li><a href="16-8.htm" target="_top">Example 16.8: Not Too Long, Nor Too Short</a> </li> <li><a href="16-9.htm" target="_top">Example 16.9: Getting Text from Select Boxes</a></li> <li><a href="16-10.htm" target="_top">Example 16.10: The Color Chart</a></li> <li><a href="16-11.htm" target="_top">Example 16.11: Changing Select Box Text</a></li> <li><a href="16-12.htm" target="_top">Example 16.12: Adding Items to a Select Box</a></li> </ul> <h2>Chapter 17: Communicating with the User</h2> <ul> <li><a href="17-1.htm">Example 17.1: Incorporating Information From a Form</a> </li> <li><a href="17-2.htm">Example 17.2: Getting Information From Prompt Boxes</a> </li> <li><a href="17-3.htm">Example 17.3: Setting defaultStatus</a> </li> <li><a href="17-4.htm">Example 17.4: Setting defaultStatus Two Ways</a> </li> <li><a href="17-5.htm">Example 17.5: Changing defaultStatus</a> </li> <li><a href="17-6.htm">Example 17.6: More Ways to Change defaultStatus</a> </li> <li><a href="17-7.htm">Example 17.7: Setting the Temporary Status Message</a> </li> <li><a href="17-8.htm">Example 17.8: Setting the Temporary Status Message...From a Button?</a> </li> <li><a href="17-9.htm">Example 17.9: Writing to the Current Document</a> </li> <li><a href="17-10.htm">Example 17.10: Communicating Through Textareas</a> </li> </ul> <h2>Chapter 18: The Area Code & Telephone Directory Programs</h2> <ul> <li><a href="areacode.htm">The Completed Area Code Program</a></li> <li><a href="phone.htm">The Completed Telephone Directory Program</a></li> </ul> <h2>Chapter 19: Ready-to-Use Scripts</h2> <ul> <li><a href="19-1.htm">Example 19.1: The Clock from JavaScript 411 and Netscape</a> </li> <li><a href="19-2.htm">Example 19.2: The Scrolling Status-Bar Message from JavaScript 411</a> </li> </ul> <p>Links to Libraries:<br> <a href="http://www.freqgrafx.com/411/" target="_top"><b>JavaScript 411:</b> http://www.freqgrafx.com/411/</a><br> <a href="http://www.c2.org/~andreww/javascript/lib/" target="_top"><b>The JavaScript Library at the JavaScript Index:</b> http://www.c2.org/~andreww/javascript/lib/</a><br> <a href="http://tanega.com/java/java.html" target="_top"><b>JavaScript--Simple Little Things To Add To Your Pages:</b> http://tanega.com/java/java.html</a><br> <a href="http://www.ostrabo.uddevalla.se/dis/javascript/source.html" target="_top"><b>JavaScript Sweden, JavaScript Source Codes:</b> http://www.ostrabo.uddevalla.se/dis/javascript/source.html</a><br> <a href="http://planetx.bloomu.edu/~mpscho/jsarchive/" target="_top"><b>The JavaScript Archive:</b> http://planetx.bloomu.edu/~mpscho/jsarchive/</a><br> <a href="http://www.oz.net/~alden/javascript/jsintro.html" target="_top"><b>JavaScript Applets:</b> http://www.oz.net/~alden/javascript/jsintro.html</a><br> <a href="http://www.essex1.com/people/timothy/index.html" target="_top"><b>Timothys JavaScript Page:</b> http://www.essex1.com/people/timothy/index.html</a><br> <a href="http://www.c2.org/~andreww/javascript/collections.html" target="_top"><b>Find more libraries at the JavaScript Index:</b> http://www.c2.org/~andreww/javascript/collections.html</a><br> </p> <h2>Appendix A: About the Online Companion</h2> <h2>Appendix B: The JavaScript Objects & Arrays</h2> <dir> <li><a href="10-9.htm">The Object Hierarchy</a> </li> </dir> <h2>Appendix C: JavaScript Properties</h2> <h2>Appendix D: The JavaScript Event Handlers</h2> <h2>Appendix E: Reserved Words</h2> <h2>Appendix F: Symbol Reference</h2> <h2>Appendix G: JavaScript Colors</h2> <dir> <li><a href="colors.htm">The Color Chart</a> </li> </dir> <h2><a href="app-h.htm">Appendix H: Finding More Information</a></h2> <h2><a href="app-i.htm">Appendix I: </a><a href="app-i.htm">The Scripts We Used</a></h2> <h2><a href="down.htm">Downloads</a></h2> <hr size="6" noshade> <p>This page, and all associated pages at this site, are (c) 1996 Peter Kent (<a href="mailto:pkent@arundel.com">pkent@arundel.com</a>) and <a href="http://ourworld.compuserve.com:80/homepages/john_kent/">John Kent, CISS Ltd</a> (testing and marketing software, London, England: <a href="mailto:100553.1346@compuserve.com">100553.1346@compuserve.com</a>). You have permission to copy scripts and use them in your Web pages, but not to resell them in any form. </p> </body>