Professional JavaScript For Web Developers

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Chapter 18 Using SetVariable() and GetVariable(), it’s possible to pass information to and get information from a Flash movie. For this to work, the Flash movie must have a variable that is watched for a value change. The simplest way to do this is to create a text field and tie its value to a variable (by selecting Dynamic Text from the Flash Properties panel and entering the name of the variable). Then, you can get the value of the variable using GetVariable() and change its value using SetVariable(). Both methods require the name of the variable in relation to its timeline. So, to access a variable named message in the main timeline, the first argument for both methods is “/:message”, where “/” represents the default timeline, the colon indicates a part of the timeline to access, and message is the variable name. For example: var sOriginalMessage = oFlashMovie.GetVariable(“/:message”); oFlashMovie.SetVariable(“/:message”, “my new message”); Some methods also work on a specific timeline in the movie: ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ TCallFrame(timeline, frame_number) — Executes the action in the Eframe that is in the given position TCallLabel(timeline, frame_label) — Executes the action in the frame represented by the given label TCurrentFrame(timeline) — Returns the position of the current frame in the timeline TCurrentLabel(timeline) — Returns the label of the current frame in the timeline TGetProperty(timeline, property_constant) — Returns the value of the property indicated by the property constant (discussed later) as a string TGetPropertyAsNumber(timeline, property_constant) — Returns the value of the property indicated by the property constant as a number TGotoFrame(timeline, frame_number) — Sets the movie to the frame in the given position in the timeline TGotoLabel(timeline, frame_label) — Sets the movie to the frame with the given label in the timeline TPlay(timeline) — Plays the movie on the given timeline TSetProperty(timeline, property_constant, value) — Sets the value of the property indicated by the property constant as a string TStopPlay(timeline) — Stops the movie on the given timeline The TGetProperty(), TGetPropertyAsNumber(), and TSetProperty() methods all use constants to indicate the property to get or set. Because the constants are only accessible from within Flash, JavaScript must always use the numeric value. The constants are listed in the following table: Flash Constant Value Description X_POS 0 The x-coordinate of the movie Y_POS 1 The y-coordinate of the movie X_SCALE 2 Horizontal scaling 554
Interacting with Plugins Flash Constant Value Description Y_SCALE 3 Vertical scaling CURRENT_FRAME 4 The position of the current frame in the movie TOTAL_FRAMES 5 The total number of frames in the movie ALPHA 6 The opacity of the movie (number between 0 and 100) VISIBLE 7 If the movie is visible or not WIDTH 8 The width of the movie HEIGHT 9 The height of the movie ROTATION 10 The rotation of the movie in degrees TARGET 11 The timeline name (same as first argument of any of the timeline-specific methods) FRAMES_LOADED 12 The number of frames currently loaded NAME 13 The name of the movie DROP_TARGET 14 The name of the drop target inside the movie, if one exists URL 15 The URL of the movie HIGH_QUALITY 16 If the movie is in high-quality rendering mode or not (1 for true, 0 for false) FOCUS_RECT 17 Whether or not a focus rectangle should be displayed (1 for true, 0 for false) SOUND_BUF_TIME 18 The amount of time that sound should be buffered to produce uninterrupted playback When using the timeline-specific methods, the first argument is always the name of the timeline to act on. The default timeline is represented by a single forward slash: var iXPos = oFlashMovie.TGetProperty(“/”, 0); The first argument is always mirrored by the TARGET property: var sTarget = oFlashMovie.TGetProperty(“/”, 11); alert(sTarget == “/”); //outputs true Because Flash uses an ECMAScript-based scripting language called ActionScript, the interaction with JavaScript is seamless. Flash-to-JavaScript communication Flash also has the capability to interact with JavaScript that exists on the HTML page in which it is embedded. When using the element to embed the Flash movie, this capability is enabled by 555
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Professional JavaScript for Web De
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Professional JavaScript for Web De
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Vice President and Executive Group
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Contents Acknowledgments Introducti
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Contents Scope 88 Public, protected
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Contents Simple Patterns 197 Metach
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Contents Chapter 10: Advanced DOM T
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Contents Chapter 14: Error Handling
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Contents Chapter 18: Interacting wi
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Introduction Although once supporte
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Introduction 2. ECMAScript Basics T
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Conventions Introduction To help yo
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What Is JavaScript? When JavaScript
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JavaScript Implementations What Is
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ECMAScript support in Web browsers
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What Is JavaScript? By creating a t
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The Browser Object Model (BOM) What
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Chapter 2 ❑ End-of-line semicolon
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Chapter 2 ❑ ❑ Pascal Notation
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Chapter 2 When a value is assigned
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Chapter 2 alert(typeof oTemp); aler
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Chapter 2 A few special values are
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Chapter 2 Converting to a string Th
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Chapter 2 The parseFloat() method w
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Chapter 2 This syntax is similar to
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Chapter 2 The toFixed() method retu
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Chapter 2 Next up is the concat() m
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Chapter 2 alert(oStringObject.subst
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Chapter 2 If you place this line of
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Chapter 2 The postfix increment and
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Chapter 2 1 0 0 1 0 (2 4 x1) + (2 3
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Chapter 2 var iResult = 25 & 3; ale
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Chapter 2 Note that left shift pres
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Chapter 2 In this example, a Boolea
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Chapter 2 Just like logical AND, if
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Chapter 2 Just like the multiplicat
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Chapter 2 var bResult = “23” <
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Chapter 2 operator to compare the s
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Chapter 2 if (i > 25) alert(“Grea
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Chapter 2 Labeled statements It is
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Chapter 2 The with statement The wi
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Chapter 2 For example: function say
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Chapter 2 The arguments object With
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Chapter 2 var doAdd = new Function(
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Chapter 2 } return iNum1 + iNum2 +
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Chapter 3 The object definition is
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Chapter 3 Types of Objects In ECMAS
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Chapter 3 The Array object override
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Chapter 3 Push onto the stack top b
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Chapter 3 They wait their turns, ev
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Chapter 3 This line creates a new D
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Chapter 3 Method setFullYear(year)
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Chapter 3 This code outputs two val
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Chapter 3 Property Error EvalError
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Chapter 3 Here, Math.E is first rai
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Chapter 3 Scope Programmers in any
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Chapter 3 In this code, the functio
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Chapter 3 Some got around this prob
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Chapter 3 Car.prototype.color = “
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Chapter 3 } } Car.prototype.showCol
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Chapter 3 StringBuffer.prototype.ap
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Chapter 3 } } } return -1; This met
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Chapter 3 Summary ECMAScript provid
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Chapter 4 Shape Ellipse Polygon Cir
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Chapter 4 All new properties and me
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Chapter 4 The apply() method The ap
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Chapter 4 ClassB.prototype.name =
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Chapter 4 In ECMAScript, the class
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Chapter 4 } Rectangle.prototype = n
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Chapter 4 the limit in an effort to
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Chapter 4 Dynamic prototyping suppo
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Chapter 4 } } ClassZ.prototype.sayM
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Chapter 4 In this case, the supercl
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Chapter 4 Rectangle.prototype.getAr
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Chapter 5 Although originally creat
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Chapter 5 ❑ ❑ Code Maintenance
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Chapter 5 on the following line. Ne
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Chapter 5 alert("A is greater
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Chapter 5 Figure 5-2 The next tag i
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Chapter 5 The Browser Object Model
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Chapter 5 Frameset Example
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Chapter 5 ❑ resizeTo(w, h) — re
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Chapter 5 As mentioned previously,
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Chapter 5 To determine if the user
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Chapter 5 Books Be careful not to o
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Chapter 5 Here, the code uses linke
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Chapter 5 you want to track where u
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Chapter 5 This code writes a tag t
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Chapter 5 The method assign() accom
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Chapter 5 Property/Method Descripti
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DOM Basics The Document Object Mode
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DOM Basics Today XML is one of the
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DOM Basics The Document Object Mode
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DOM Basics The node is considered
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DOM Basics The W3C has also publish
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DOM Basics Checking the node type Y
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Accessing specific nodes You alread
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DOM Basics To access the element w
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DOM Basics You’re not done quite
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DOM Basics This sample page replace
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DOM Basics To get and set the src a
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DOM Basics ❑ ❑ ❑ deleteCaptio
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DOM Basics Document Element html El
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DOM Basics var node3 = iterator.pre
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DOM Basics Hello World! List i
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DOM Basics var oOutput = document.g
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DOM Basics necessarily mean that th
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Chapter 7 This regular expression m
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Chapter 7 var sToChange = “The sk
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Chapter 7 This code matches the let
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Chapter 7 Note that [a-z] matches o
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Chapter 7 You can read this regular
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Chapter 7 For the second regular ex
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Chapter 7 Expressions to match lead
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Chapter 7 In this, reRedOrBlack mat
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Chapter 7 Lookaheads Sometimes you
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Chapter 7 It is, in fact, easier to
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Chapter 7 reB.exec(sToMatch); alert
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Chapter 7 Common Patterns On the We
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Chapter 7 The isValidDate() functio
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Chapter 7 } } } bIsOdd = !bIsOdd; A
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Chapter 7 Validating e-mail address
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Browser and Operating System Detect
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The important things to note in thi
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Detecting Opera The simplest and be
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Depending on which browsers you pla
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All about Events JavaScript’s int
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All about Events document 3 bubblin
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All about Events Some have also cal
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Using this method of assignment, th
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All about Events var oDiv = documen
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Properties/methods Internet Explore
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All about Events Property/Method Ty
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Detecting Shift, Alt, Ctrl To detec
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Getting the target The object at th
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All about Events When the button is
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All about Events Using the mouseove
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All about Events if (oEvent.fromEle
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All about Events Event properties F
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All about Events ❑ ❑ ❑ ❑ Th
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All about Events The actual res
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All about Events window.onscroll =
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All about Events In the second part
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All about Events DOM Property/Metho
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All about Events }; } return oEvent
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All about Events oEvent.eventPhase
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All about Events } var oTextbox = d
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Chapter 10 CSS Style Attribute back
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Chapter 10 var oDiv = document.getE
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Chapter 10 This example passes the
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Chapter 10 ❑ ❑ ❑ ❑ ❑ medi
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Chapter 10 In this example, three
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Chapter 10 } function getBackgrou
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Chapter 10 node in question. For ex
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Chapter 10 If you plan to use DOM r
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Chapter 10 Hello World oRange
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Chapter 10 ❑ setEndAfter(refNode)
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Chapter 10 Interacting with DOM ran
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Chapter 10 The following code accom
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Chapter 10 Comparing DOM ranges If
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Chapter 10 The closest thing to the
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Chapter 10 Comparing IE ranges Rang
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Forms and Data Integrity Form eleme
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Forms and Data Integrity Comments:
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Forms and Data Integrity //is the f
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You can actually mimic the behavior
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allowed in the text box. So to crea
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Forms and Data Integrity Select T
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Forms and Data Integrity }; } } } }
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Allowing/blocking characters in tex
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Forms and Data Integrity main diffe
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Forms and Data Integrity You must u
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Forms and Data Integrity You may as
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Forms and Data Integrity Because bo
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Forms and Data Integrity Even thoug
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Forms and Data Integrity This metho
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Forms and Data Integrity TextUtil.a
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Forms and Data Integrity The autosu
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Chapter 12 }; return -1; } else if
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Chapter 12 Smith Johnson Hend
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Chapter 12 This section of code cre
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Chapter 12 Smith John Johnson Bet
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Chapter 12 Last Name First Name
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Chapter 12 Creating a conversion fu
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Chapter 12 Using this methodology,
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Chapter 12 The concept Keep in mind
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Chapter 12 } }; if (vValue1 < vValu
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Drag and Drop One of the biggest im
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Drag and Drop } Try dragging th
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Drag and Drop function handleDragDr
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Drag and Drop In this example, all
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Drag and Drop This is essentially t
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Drag and Drop oEvent.dataTransfer.e
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Drag and Drop } } oEvent.srcElement
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Drag and Drop function handleMouseD
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Drag and Drop function handleMouseU
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Drag and Drop } return (iX >= iX1 &
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Drag and Drop The zDraggable object
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Drag and Drop position: absolute; l
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Chapter 14 some other reason, perha
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Chapter 14 Figure 14-2 The other op
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Chapter 14 The problem with IE/Mac
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Chapter 14 Figure 14-7 Opera 7 (all
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Chapter 14 In this example, an exce
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Chapter 14 Handling syntax errors T
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Chapter 14 Mozilla’s extensions t
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Chapter 14 Determining the type of
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Chapter 14 Note that the check for
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Chapter 14 Mozilla, Safari, and Ope
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Chapter 14 As you can see, this red
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Chapter 14 The last utility window
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Chapter 14 Figure 14-14 Foreground
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Chapter 14 Under each file (JavaScr
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Chapter 14 Figure 14-19 You also ha
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Chapter 14 Adding a watch adds a va
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XML in JavaScript With the rising p
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XML in JavaScript using the string
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Retrieving XML After you’ve gotte
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XML in JavaScript This line of code
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XML in JavaScript As long as you in
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XML in JavaScript Unfortunately, th
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XML in JavaScript try { var oXmlDom
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XML in JavaScript var oXmlDom = new
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XML in JavaScript Document.prototyp
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XML in JavaScript With this code ad
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XML in JavaScript }; } this.parseEr
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XPath support in IE Microsoft saw f
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XML in JavaScript XPathResult.ORDER
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XML in JavaScript If you feel like
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XML in JavaScript As you can see,
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XML in JavaScript Employees
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XML in JavaScript The setStartMode(
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XML in JavaScript var oProcessor =
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Chapter 16 Cookie ingredients No ch
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Chapter 16 The setCookie() function
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Chapter 16 } %> for (int i=0; i < c
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Chapter 16 The one restriction on s
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Chapter 16 Hidden Frames A trick th
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Chapter 16 } setTimeout(function ()
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Chapter 16 with the HTTP status of
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Chapter 16 Assuming that you have s
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Chapter 16 It also helps to have a
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Chapter 16 var oReader = new java.i
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Chapter 16 oConnection.setRequestPr
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Page 534 and 535: Chapter 16 }; }, 10); } else { aler
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Page 539 and 540: Web Services xmlns=”http://schema
Page 541 and 542: Web Services The pertinent informat
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Page 545 and 546: Enhanced privileges Contacting a di
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Page 549 and 550: Web Services Once again, the first
Page 551 and 552: Web Services } onError: function (s
Page 553 and 554: Web Services } else { alert(“Prox
Page 555 and 556: Web Services var oService = new Web
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Page 559 and 560: Interacting with Plugins The Web is
Page 561 and 562: Interacting with Plugins ❑ ❑ Ac
Page 563 and 564: Detecting Plugins As with most Web
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Page 571 and 572: Interacting with Plugins } } else {
Page 573 and 574: Interacting with Plugins } var oApp
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Page 589: Summary Interacting with Plugins Th
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Page 594 and 595: Chapter 19 The preceding code displ
Page 596 and 597: Chapter 19 If the script isn’t si
Page 598 and 599: Chapter 19 This example places the
Page 600 and 601: Chapter 19 alert(sJavaScriptHello);
Page 602 and 603: Chapter 19 takes for the script to
Page 604 and 605: Chapter 19 One of the best tools fo
Page 606 and 607: Chapter 19 Use array and object lit
Page 608 and 609: Chapter 19 (window) MyFirstName = "
Page 610 and 611: Chapter 19 Remember Computer Scienc
Page 612 and 613: Chapter 19 Keep these algorithms in
Page 614 and 615: Chapter 19 } iSum += aValues[i]; i+
Page 616 and 617: Chapter 19 iLoopCount = Math.floor(
Page 618 and 619: Chapter 19 JavaScript gotchas JavaS
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Page 622 and 623: Chapter 19 Using the JavaScript com
Page 625 and 626: The Evolution of JavaScript So far
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The Evolution of JavaScript Note th
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The Evolution of JavaScript As you
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The Evolution of JavaScript var oXm
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The Evolution of JavaScript var oXm
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The Evolution of JavaScript If you
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The Evolution of JavaScript In the
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Index Index SYMBOLS + (add operator
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avoiding hard-coded strings, 569-57
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close() method of document object,
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Konqueror/Safari, 239-241 language,
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try...catch statement, 423-427 vari
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F factory paradigm, 90-92 findPlugi
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history of browser window, 148 of J
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XML DOM support in Mozilla and, 455
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getAllResponseHeaders(), 495 getCom
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findPlugin() function, 538 helper a
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parsing error description of, 412-4
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eferences to object, 69 referencing
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size of array, 71 slice() method Ar
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MIME type, 537-538 range collapse,
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vector graphics, 133 Venkman breakp
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Professional JavaScript For Web Developers

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