JavaScript Examples Bible - UserWorks Technologies

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Chapter 2 ✦ Window and Frame Objects (Chapter 16) The window.open() method doesn’t provide parameters for setting the new window’s background color, so I let the getColor() function in the new window do the job as the document loads. The function uses the opener property to find out which radio button on the main page is selected. Listing 16-12: References to the opener Property New Window on the Block function getColor() { // shorten the reference colorButtons = self.opener.document.forms[0].color // see which radio button is checked for (var i = 0; i < colorButtons.length; i++) { if (colorButtons[i].checked) { return colorButtons[i].value } } return “white” } document.write(“”) This is a new window. Type text here for the main window: In the getColor() function, the multiple references to the radio button array can be very long. To simplify the references, the getColor() function starts out by assigning the radio button array to a variable I arbitrarily call colorButtons. That shorthand now stands in for lengthy references as I loop through the radio buttons to determine which button is checked and retrieve its value property. A button in the second window simply fetches the title of the opener window’s document. Even if another document loads in the main window in the meantime, the opener reference still points to the main window: Its document object, however, will change. 143 windowObject.opener
144 JavaScript Examples Bible: The Essential Companion to JavaScript Bible Figure 2-3: The main and subwindows, inextricably linked via the window.opener property Finally, the second window contains a text input object. Enter any text there that you like and either tab or click out of the field. The onChange event handler updates the field in the opener’s document (provided that document is still loaded). pageXOffset pageYOffset windowObject.pageXOffset NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility ✓ ✓ Example The script in Listing 16-13 is an unusual construction that creates a frameset and creates the content for each of the two frames all within a single HTML document (see “Frame Object” in Chapter 16 of the JavaScript Bible for more details). The purpose of this example is to provide you with a playground to become familiar with the page offset concept and how the values of these properties correspond to physical activity in a scrollable document. In the left frame of the frameset are two fields that are ready to show the pixel values of the right frame’s pageXOffset and pageYOffset properties. The content
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100% ONE HUNDRED PERCENT COMPREHENS
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“An excellent book that builds so
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JavaScript Examples Bible: The Ess
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About the Author Danny Goodman is t
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Preface Acommon thread running thro
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Preface Listing numbers are derived
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Acknowledgments Because most of the
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Contents Preface. . . . . . . . . .
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Contents Chapter 7: The Form and Re
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Contents Chapter 15: The NN4 Layer
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2 JavaScript Examples Bible: The Es
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Page 191 and 192: 170 JavaScript Examples Bible: The
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196 FRAMESET.cols JavaScript Exampl
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198 IFRAME.align JavaScript Example
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200 IFRAME.src JavaScript Examples
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234 document.height JavaScript Exam
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236 document.layers JavaScript Exam
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254 document.write() JavaScript Exa
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Body Text Objects (Chapter 19) The
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Note Chapter 5 ✦ Body Text Object
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Chapter 5 ✦ Body Text Objects (Ch
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width Chapter 5 ✦ Body Text Objec
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commonAncestorContainer Chapter 5
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Methods cloneContents() cloneRange(
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extractContents() Chapter 5 ✦ Bod
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var count = form.deleteCount.value
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inRange(otherRangeRef) Chapter 5
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TextRectangle Object Properties bot
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Image, Area, and Map Objects (Chapt
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Chapter 6 ✦ Image, Area, and Map
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dynsrc Chapter 6 ✦ Image, Area, a
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nameProp Chapter 6 ✦ Image, Area,
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start x y Chapter 6 ✦ Image, Area
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} Chapter 6 ✦ Image, Area, and Ma
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The Form and Related Objects (Chapt
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Chapter 7 ✦ The Form and Related
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length Chapter 7 ✦ The Form and R
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submit() Chapter 7 ✦ The Form and
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Button Objects (Chapter 24) The top
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Chapter 8 ✦ Button Objects (Chapt
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Checkbox Input Object Properties ch
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value Chapter 8 ✦ Button Objects
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Text-Related Form Objects (Chapter
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Chapter 9 ✦ Text-Related Form Obj
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document.forms[0].inspector.readOnl
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Chapter 9 ✦ Text-Related Form Obj
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} } Chapter 9 ✦ Text-Related Form
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onChange Chapter 9 ✦ Text-Related
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Select, Option, and Optgroup Object
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Chapter 10 ✦ Select, Option, and
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selectedIndex Chapter 10 ✦ Select
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Event handlers onChange Chapter 10
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Table and List Objects (Chapter 27)
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gColor Chapter 11 ✦ Table and Lis
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Now, adjust the cell spacing: docum
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NigerAtlantic Ocean26004180 Zamb
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Chapter 11 ✦ Table and List Objec
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type Chapter 11 ✦ Table and List
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Navigator and Other Environment Obj
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Chapter 12 ✦ Navigator and Other
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mimeTypes Chapter 12 ✦ Navigator
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screen Object Properties availLeft
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Event Objects (Chapter 29) As earli
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Chapter 13 ✦ Event Objects (Chapt
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Chapter 13 ✦ Event Objects (
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Figure 13-2: Clicking on one SPAN e
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clientX clientY layerX layerY pageX
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eventPhase Chapter 13 ✦ Event Obj
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440 ruleObject.style JavaScript Exa
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String and Number Objects (Chapters
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Parsing methods string.charAt(index
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488 array.concat() JavaScript Examp
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490 array.concat() JavaScript Examp
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492 array.reverse() JavaScript Exam
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494 array.sort() JavaScript Example
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What’s on the CD-ROM The accompan
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A above property, 442-443 accessKey
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set to empty, 11 working with, 12 c
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location property, 238-240 methods,
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frames border, 197-198, 199 control
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onDragStart event handler, 103, 108
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insertBefore() method compatibility
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go(), 221-222 hasChildNodes(), 74-7
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NN4 layer object above property, 44
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onSelectStart event handler compati
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frame, 385-387 FRAME element object
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protocol property, 213 document obj
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self property compatibility, 149 ex
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text property BODY element object,
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X x property IE4+ event object, 413
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4. Restrictions on Use of Individua
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CD-ROM Installation Instructions Th
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