JavaScript Examples Bible - UserWorks Technologies

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clientX clientY layerX layerY pageX pageY screenX screenY Chapter 13 ✦ Event Objects (Chapter 29) NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility ✓ Example You can see the effects of the coordinate systems and associated NN6 properties with the page in Listing 29-19. You can view coordinate values for all four measuring systems, as well as some calculated value. Two clickable objects are provided so that you can see the differences between an object not in any layer and an object residing within a layer (although anything you see is clickable, including text nodes). Figure 13-3 shows the results of a click inside the positioned layer. Figure 13-3: NN6 event coordinates for a click inside a positioned element 425 (NN6) eventObject.clientX
426 JavaScript Examples Bible: The Essential Companion to JavaScript Bible (NN6) eventObject.clientX One of the calculated fields applies window scrolling values to the client coordinates. But, as you will see, these calculated values are the same as the more convenient page coordinates. The other calculated field shows the coordinates relative to the rectangular space of the target element. Notice in the code that if the nodeType of the target indicates a text node, that node’s parent node (an element) is used for the calculation. Listing 29-19: NN6 Event Coordinate Properties X and Y Event Properties (NN6+) function checkCoords(evt) { var form = document.forms[“output”] var targText, targElem if (evt.target.nodeType == 3) { targText = “[textnode] inside ” targElem = evt.target.parentNode } else { targText = “” targElem = evt.target } form.srcElemTag.value = targText form.clientCoords.value = evt.clientX + “,” + evt.clientY form.clientScrollCoords.value = (evt.clientX + window.scrollX) + “,” + (evt.clientY + window.scrollY) form.layerCoords.value = evt.layerX + “,” + evt.layerY form.pageCoords.value = evt.pageX + “,” + evt.pageY form.inElemCoords.value = (evt.pageX - targElem.offsetLeft - document.body.offsetLeft) + “,” + (evt.pageY - targElem.offsetTop - document.body.offsetTop) form.screenCoords.value = evt.screenX + “,” + evt.screenY return false } X and Y Event Properties (NN6+) Click on the button and in the DIV/image to see the coordinate values for the event object. NN6 Mouse Event Coordinates: target: clientX, clientY: ...With scrolling:
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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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192 FRAME.scrolling JavaScript Exam
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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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192 FRAME.scrolling JavaScript Exam
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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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Chapter 10 ✦ Select, Option, and
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Page 480 and 481: Table and List Objects (Chapter 27)
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Page 568 and 569: String and Number Objects (Chapters
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Chapter 16 ✦ String and Number Ob
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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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