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CHAPTER 6 ■ FUNCTIONS AND ARRAYS 242 } else { return e1[2] > e2[2] ? -1 : 1; } }; console.dir(pirates.sort(sortByLosses)); Figure 6–33. Sorting elements in the pirates array by losses and then by year Forgive me for being negative and sorting by losses. In Pittsburgh, between the end of the Penguins season and beginning of the Steelers season, guessing how many games the Pirates will lose and which star players they’ll trade away for prospects is pretty much all there is to do sports-wise. So let’s be optimistic and sort pirates by wins instead. Doing so is trivial, just rename the function sortByWins and change the indexes in the boolean expression and else clause from 2 to 1 like so. var pirates = [[2010, 57, 105], [2009, 62, 99], [2008, 67, 95], [2007, 68, 94], [2006, 67, 95], [2005, 67, 95], [2004, 72, 89], [2003, 75, 87], [2002, 72, 89], [2001, 62, 100], [2000, 69, 93], [1999, 78, 83], [1998, 69, 93],
CHAPTER 6 ■ FUNCTIONS AND ARRAYS [1997, 79, 83], [1996, 73, 89], [1995, 58, 86], [1994, 53, 61], [1993, 75, 87]]; var sortByWins = function (e1, e2) { if (e1[1] === e2[1]) { return e1[0] > e2[0] ? -1 : 1; } else { return e1[1] > e2[1] ? -1 : 1; } }; Then invoke sort() on pirates, but pass the identifier sortByWins instead of sortByLosses. As before, pass the return value of sort() to console.dir() and JavaScript will print the reordered pirates array in Firebug as in Figure 6–34. var pirates = [[2010, 57, 105], [2009, 62, 99], [2008, 67, 95], [2007, 68, 94], [2006, 67, 95], [2005, 67, 95], [2004, 72, 89], [2003, 75, 87], [2002, 72, 89], [2001, 62, 100], [2000, 69, 93], [1999, 78, 83], [1998, 69, 93], [1997, 79, 83], [1996, 73, 89], [1995, 58, 86], [1994, 53, 61], [1993, 75, 87]]; var sortByWins = function (e1, e2) { if (e1[1] === e2[1]) { return e1[0] > e2[0] ? -1 : 1; } else { return e1[1] > e2[1] ? -1 : 1; } }; console.dir(pirates.sort(sortByWins)); 243
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THE EXPERT’S VOICE ® IN WEB DEVE
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ii JavaScript for Absolute Beginner
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iv Contents at a Glance ■Contents
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■ CONTENTS vi ■Chapter 2: Type
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■ CONTENTS viii Sharing a Prototy
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■ CONTENTS x Querying Attributes
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■ CONTENTS xii Getting the User
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■ CONTENTS xiv About the Technica
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■ PREFACE xvi Preface In the 2005
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■ PREFACE xviii Opening Firebug L
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■ PREFACE xx Now press Return on
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■ PREFACE xxii editor reappear. N
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■ PREFACE xxiv
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CHAPTER 1 ■ REPRESENTING DATA WIT
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CHAPTER 2 ■ TYPE CONVERSION 26 Fi
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CHAPTER 2 ■ TYPE CONVERSION 30 St
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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 72 The impo
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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 94 fridge.y
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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 312 tex
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CHAPTER 8 ■ SCRIPTING CSS 314 Fig
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CHAPTER 8 ■ SCRIPTING CSS 322 Exp
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CHAPTER 8 ■ SCRIPTING CSS 336 Why
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CHAPTER 9 ■ LISTENING FOR EVENTS
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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 474 ■ P padJSON(), 445
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