* Features more than 500 oversized, annotated screenshots and a companion Web site with all the code from the book * Demonstrates over 100 key JavaScript tasks, such as using buttons to trigger events, detecting browsers, changing text and link colors, working with forms and frames, and determining environment properties * Each step is illustrated with callouts that show the reader exactly where the action occurs on the screen * JavaScript remains extremely popular for use in interactive Web pages

Table of Contents:
HOW TO USE THIS BOOK. CHAPTER 1: INTRODUCING JAVASCRIPT. Introduction to JavaScript. Enter a JavaScript Statement into the Address Bar. Embed JavaScript in an HTML Document. Link an External JavaScript File. Present Content to Non-JavaScript Enabled Browsers. Add a Comment to JavaScript Code. Protect the Source Code. CHAPTER 2: USING VARIABLES AND ARRAYS. Understand Variable Types. Declare Variables. Assign Values to Variables. Display Integers. Display Floating-Point Numbers. Display Booleans. Display Strings. Determine Variable Type. Convert Strings to Numbers. Convert Numbers to Strings. Declare an Array. Declare a Multidimensional Array. Determine the Number of Elements of an Array. Convert an Array into a String. Sort an Array. Remove Elements from an Array. Add Elements to an Array. CHAPTER 3: CREATING EXPRESSIONS. Using the Arithmetic Operator. Increment and Decrement Values. Create Comparison Expressions. Create Logical Expressions. Identify Numbers. Evaluate an Expression. Inform the User with an Alert Dialog Box. Enable User Input with a Prompt Dialog Box. Enable User Decisions with a Confirm Dialog Box. CHAPTER 4: HANDLING EVENTS. JavaScript Events. Detect a Mouse Click. Create Rollover Buttons. Detect a Key Press. Detect a Modifier Key Combination. Set and Remove Focus. Onchange Event. Handle the Page Load and Onunload Operations. Execute a JavaScript Statement from an HTML Link. Attach an Event to an Object. Determine the Element That Received the Event. Determine Which Mouse Button Was Pressed. Cancel Browser Events. CHAPTER 5: CONTROLLING PROGRAM FLOW. Limit Executions with If-Else Statements. Using Conditional Operators. Optimize Performance with a Switch Statement. Create a For Loop. Continue and Break Loops. Handle While Loops. Create a Timed Interval. Set a Regularly Timed Interval. Declare and Call a Function. Handle Global and Local Variables. Pass Parameters to a Function. Return a Value from a Function. Increase Script Performance. CHAPTER 6: UTILIZING STRINGS. Determine the Length of a String. Select Portions of a String. Change the Case of a String. Extract Characters from a String. Escape a Text String. Encode a URI. Regular Expression. Match the Character in a String. Replace Characters in a String. CHAPTER 7: WORKING WITH HTML FORMS. Develop HTML Forms. Reference Form Elements. Validate a Text Box Value. Validate a Password Field. Work with a Hidden Element. Validate Text Area Input. Work with a Button Element. Apply Reset and Submit Buttons. Alter Check Box Properties. Determine Selected Radio Button. Work with a Selection List. Basic Form Validation. Create a Select Element Navigation Menu. Block an Enter Key Invoked Form Submission. Advance the Text Field Focus with the Enter Key. CHAPTER 8: WORKING WITH DATES AND TIMES. Use the Date Object to Display Dates. Get the Date and Time Components. Set the Date and Time Parts. Convert Dates to Strings. Check If a Date Is in a Range. Convert Between Time Zones. Create a Countdown Timer. Create a Running Clock with Images. CHAPTER 9: USING THE MATH OBJECT. Employ Mathematical Constants. Apply Trigonometric Functions. Square Root and Power. Find Minimum and Maximum Values. Generate Random Numbers. Round Numbers Using Methods. Format Large Numbers with Commas. CHAPTER 10: EXPANDING FUNCTIONALITY WITH THE WINDOW OBJECT. Write Content to the Window. Create a Pop-Up Window. Detect If a Pop-Up Window Is Open. Reference Information from Multiple Windows. Close Pop-Up and Parent Windows. Set Window Size and Placement. Maximize the Browser Window. Center the Window on the Screen. Utilize an IE Modal Window. Create Content in a Pop-Up Window. CHAPTER 11: CONTROLLING THE FRAME OBJECT. Create Frames. Reference Individual Frames. Determine the Frame Dimensions. Print Individual Frames. Break In and Out of Frames. Resize the Frames. Write Content to a Frame. Understand Frame Security. CHAPTER 12: CREATING AND MANIPULATING OBJECTS. Reference Objects with the Document Object Model (DOM). Create Custom Objects. Develop a Custom Object Method. Create a Pseudo Hash Table. Manage Images with the Image Object. Locate All Links. Dissect the Location Object. Create a Bread Crumb Navigation Menu. Explore the Page History of the Browser. Disable the Back Button. CHAPTER 13: DETERMINING ENVIRONMENT PROPERTIES. Detect the Browser Brand Name. Determine the Operating System. Distinguish the Default Native Browser Language. Identify the JavaScript Version Support. Verify If a Method or Object Is Supported. Set a Cookie Value. Retrieve a Cookie Value. Delete a Cookie Value. Create a Query String. Convert a Query String into Variables. CHAPTER 14: CREATING CASCADING STYLE SHEETS. Link Style Sheets to a Web Page. Create Rules in a Style Sheet. Add Compliance Declaration. Attach Multiple CSS Rules. Override Rule Properties with Style Attribute. Modify Border Properties. Customize a Link Style. Center Content on the Web Page. Add a Background Image to the Document. Add and Alter Elements to a Web Page. Create a Scrollable DIV. Add an iFrame to the Web Page. Add Transparency to an Element. Change Style Sheet After the Page Loads. Turn Style Sheet Off or On. CHAPTER 15: CREATING INTERACTIVE WEB PAGES WITH DHTML. Reference an HTML Element. Create New HTML Elements. Use innerHTML. Set an Element Position. Find Nonpositioned Element Positions. Show and Hide Elements. Find Browser Dimensions. Find the Mouse Position. Animate Elements. Create a Draggable Element. Create a Cross-Browser Layer Modal Window. Create a Custom Alert or Confirm Dialog Box. CHAPTER 16: ADDING DYNAMIC CONTENT. Insert and Remove Items in a Selection List. Create a Double Combo Selection List. Add New Table Rows. Develop an Image Gallery. Produce an Autoscrolling Window. Construct a Navigation Tree. Generate a Navigation Drop-Down Menu. Insert Page Transition Effects. Incorporate Sound with a Button. CHAPTER 17: DEBUGGING JAVASCRIPT ERRORS. Detect a JavaScript Error. Debug through the Alert Dialog Box. Solve Problem with Page Onload Handlers. Locate Common Errors. Avoid Errors with Try/Catch Statements. Test JavaScript Code for Errors. APPENDIX. INDEX.