javascript

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■ CONTENTS x Querying Attributes Like a Member . ................................................................................................... 281 Querying Attributes with Methods . ..................................................................................................... 282 Querying Attr Nodes ............................................................................................................................. 285 Enumerating Attributes for an Element . .............................................................................................. 286 Creating Element or Text Nodes . ........................................................................................................ 288 Deleting Content .................................................................................................................................. 292 Copying Content ................................................................................................................................... 293 Creating Elements with a Helper Function . ......................................................................................... 294 Reordering Nested Lists . 296 Where Did the Formatting Text Nodes Go? . ........................................................................................ 302 Summary . ................................................................................................................... 304 ■Chapter 8: Scripting CSS .................................................................................. 307 DOM Interfaces for Working with CSS ........................................................................ 307 Clarifying Some CSS Jargon ....................................................................................... 308 How Does JavaScript Represent a Rule? . ........................................................................................... 308 Two Other Declaration Blobs . ............................................................................................................. 310 Downloading the Sample Files . ................................................................................. 310 Querying a Style Attribute . ......................................................................................... 313 Scripting Classes . ...................................................................................................... 318 Scripting Rules . .......................................................................................................... 320 Scripting Imported Style Sheets . ............................................................................... 326 Adding or Deleting a Rule . ......................................................................................... 327 Adding a Rule to a Style Sheet . ........................................................................................................... 328 Deleting a Rule from a Style Sheet . .................................................................................................... 332 Querying Overall Styles from the Cascade ................................................................. 334 Enabling and Disabling Style Sheets . ........................................................................ 338 Including or Importing Style Sheets . .......................................................................... 339 Embedding a Style Sheet . .......................................................................................... 344 Summary . ................................................................................................................... 345
■Chapter 9: Listening for Events ......................................................................... 347 Working with the Event Object .................................................................................... 347 Downloading Project Files .......................................................................................... 348 Advance Conditional Loading ...................................................................................... 351 Telling JavaScript to Stop Listening for an Event ....................................................... 353 Preventing Default Actions from Taking Place ............................................................ 353 Preventing an Event from Traversing the DOM Tree ................................................... 355 Writing Helper Functions ............................................................................................. 356 Crawling the DOM Tree ...................................................................................................................... 356 Finding an Element by Class .............................................................................................................. 358 Testing for getElementsByClassName() ............................................................................................. 360 Querying the Cascade ........................................................................................................................ 362 Sliding Sprites ............................................................................................................. 364 Preparing the Ground ......................................................................................................................... 365 Moving the Sprites ............................................................................................................................. 368 Snappier Sprites ................................................................................................................................ 370 Drag-and-Drop Behavior ............................................................................................. 375 Writing the Mousedown Event Listener ............................................................................................. 375 Writing the Mousemove Event Listener ............................................................................................. 378 Writing the Mouseup Event Listener .................................................................................................. 380 The doZ() Helper Function .................................................................................................................. 382 Prepping the Drag .............................................................................................................................. 383 Swapping Skins by Key ............................................................................................... 390 Initiating Behaviors When the DOM Tree Is Available ................................................. 395 Fighting Global Evil ..................................................................................................... 395 Summary ..................................................................................................................... 396 ■ CONTENTS ■Chapter 10: Scripting BOM ................................................................................ 399 Downloading the Project Files .................................................................................... 399 Remembering Visitor Data with Cookies ..................................................................... 401 xi
Page 1: THE EXPERT’S VOICE ® IN WEB DEVE
Page 4 and 5: ii JavaScript for Absolute Beginner
Page 6 and 7: iv Contents at a Glance ■Contents
Page 8 and 9: ■ CONTENTS vi ■Chapter 2: Type
Page 10 and 11: ■ CONTENTS viii Sharing a Prototy
Page 14 and 15: ■ CONTENTS xii Getting the User
Page 16 and 17: ■ CONTENTS xiv About the Technica
Page 18 and 19: ■ PREFACE xvi Preface In the 2005
Page 20 and 21: ■ PREFACE xviii Opening Firebug L
Page 22 and 23: ■ PREFACE xx Now press Return on
Page 24 and 25: ■ PREFACE xxii editor reappear. N
Page 26 and 27: ■ PREFACE xxiv
Page 28 and 29: CHAPTER 1 ■ REPRESENTING DATA WIT
Page 52 and 53: CHAPTER 2 ■ TYPE CONVERSION 26 Fi
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CHAPTER 2 ■ TYPE CONVERSION 36 wa
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CHAPTER 2 ■ TYPE CONVERSION 38
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CHAPTER 2 ■ TYPE CONVERSION 40 Fi
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CHAPTER 2 ■ TYPE CONVERSION 44 pr
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CHAPTER 2 ■ TYPE CONVERSION 50 Co
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CHAPTER 2 ■ TYPE CONVERSION 54 To
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CHAPTER 3 ■ OPERATORS 58 Remember
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CHAPTER 3 ■ OPERATORS 60 Using Ja
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CHAPTER 3 ■ OPERATORS 62 dough.po
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CHAPTER 3 ■ OPERATORS 64 mincedLe
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CHAPTER 3 ■ OPERATORS 66 Figure 3
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CHAPTER 3 ■ OPERATORS 68 // 1.25
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CHAPTER 3 ■ OPERATORS 70 • If b
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CHAPTER 3 ■ OPERATORS 72 The impo
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CHAPTER 3 ■ OPERATORS 74 tartar:
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CHAPTER 3 ■ OPERATORS 76 } }; pur
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CHAPTER 3 ■ OPERATORS 78 saigonCi
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CHAPTER 3 ■ OPERATORS 82 loganber
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CHAPTER 3 ■ OPERATORS 92 tartar:
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CHAPTER 3 ■ OPERATORS 94 fridge.y
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CHAPTER 3 ■ OPERATORS 96
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CHAPTER 4 ■ CONTROLLING FLOW 98 s
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CHAPTER 4 ■ CONTROLLING FLOW 100
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CHAPTER 5 ■ MEMBER INHERITANCE 14
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CHAPTER 6 ■ FUNCTIONS AND ARRAYS
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CHAPTER 7 ■ TRAVERSING AND MODIFY
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CHAPTER 8 ■ SCRIPTING CSS 308 Rem
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CHAPTER 8 ■ SCRIPTING CSS 310 var
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CHAPTER 8 ■ SCRIPTING CSS 312 tex
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CHAPTER 8 ■ SCRIPTING CSS 314 Fig
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CHAPTER 8 ■ SCRIPTING CSS 316 We
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CHAPTER 8 ■ SCRIPTING CSS 318 Don
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CHAPTER 8 ■ SCRIPTING CSS 322 Exp
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CHAPTER 8 ■ SCRIPTING CSS 324 fun
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CHAPTER 8 ■ SCRIPTING CSS 326 One
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CHAPTER 8 ■ SCRIPTING CSS 328 } L
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CHAPTER 8 ■ SCRIPTING CSS 330 •
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CHAPTER 8 ■ SCRIPTING CSS 332 ins
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CHAPTER 8 ■ SCRIPTING CSS 336 Why
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CHAPTER 8 ■ SCRIPTING CSS 340 Ref
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CHAPTER 8 ■ SCRIPTING CSS 344 } }
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CHAPTER 8 ■ SCRIPTING CSS 346
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CHAPTER 9 ■ LISTENING FOR EVENTS
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CHAPTER 10 ■ SCRIPTING BOM 400 Ne
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CHAPTER 10 ■ SCRIPTING BOM 402 }
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■ INDEX 462 parsing an XML respon
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■ INDEX 464 creating, 217 queryin
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■ INDEX 466 document.styleSheets,
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■ INDEX 468 listening for mousedo
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■ INDEX 470 chaining prototypes,
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■ INDEX 472 definition of, 255 de
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■ INDEX 474 ■ P padJSON(), 445
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■ INDEX 476 ten.js, 401 ternary o
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■ INDEX 478
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