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 2004 Prentice Hall, Inc. All rights reserved. Chapter 13 - Dynamic HTML: Object Model and Collections Outline 13.1 Introduction 13.2 Object Referencing.

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Presentation on theme: " 2004 Prentice Hall, Inc. All rights reserved. Chapter 13 - Dynamic HTML: Object Model and Collections Outline 13.1 Introduction 13.2 Object Referencing."— Presentation transcript:

1  2004 Prentice Hall, Inc. All rights reserved. Chapter 13 - Dynamic HTML: Object Model and Collections Outline 13.1 Introduction 13.2 Object Referencing 13.3 Collections all and children 13.4 Dynamic Styles 13.5 Dynamic Positioning 13.6 Using the frames Collection 13.7 navigator Object 13.8 Summary of the DHTML Object Model

2  2004 Prentice Hall, Inc. All rights reserved. Objectives In this lesson, you will learn: –To use the Dynamic HTML Object Model and scripting to create dynamic Web pages. –To understand the Dynamic HTML object hierarchy. –To use the all and children collections to enumerate all of the XHTML elements of a Web page. –To use dynamic styles and dynamic positioning. –To use the frames collection to access objects in a separate frame on your Web page. –To use the navigator object to determine which browser is being used to access your page.

3  2004 Prentice Hall, Inc. All rights reserved. 13.1 Introduction Dynamic HTML Object Model –Allows Web authors to control the presentation of their pages –Gives them access to all the elements on their pages Web page –Elements, forms, frames, tables –Represented in an object hierarchy Scripting –Retrieve and modify properties and attributes

4  2004 Prentice Hall, Inc. All rights reserved. 13.2 Object Referencing The simplest way to reference an element is by using the element’s id attribute. The element is represented as an object –XHTML attributes become properties that can be manipulated by scripting

5  2004 Prentice Hall, Inc. All rights reserved. Outline reference.html (1 of 2)

6  2004 Prentice Hall, Inc. All rights reserved. Outline reference.html (2 of 2)

7  2004 Prentice Hall, Inc. All rights reserved. 13.3 Collections all and children Collections –Arrays of related objects on a page –all all the XHTML elements in a document –children Specific element contains that element’s child elements

8  2004 Prentice Hall, Inc. All rights reserved. Outline all.html (1 of 2)

9  2004 Prentice Hall, Inc. All rights reserved. Outline all.html (2 of 2)

10  2004 Prentice Hall, Inc. All rights reserved. Outline children.html (1 of 3)

11  2004 Prentice Hall, Inc. All rights reserved. Outline children.html (2 of 3)

12  2004 Prentice Hall, Inc. All rights reserved. Outline children.html (3 of 3)

13  2004 Prentice Hall, Inc. All rights reserved.

14 13.4 Dynamic Styles Element’s style can be changed dynamically Dynamic HTML Object Model also allows you to change the class attribute

15  2004 Prentice Hall, Inc. All rights reserved. Outline dynamicstyle.html (1 of 2)

16  2004 Prentice Hall, Inc. All rights reserved. Outline dynamicstyle.html (2 of 2)

17  2004 Prentice Hall, Inc. All rights reserved. Outline dynamicstyle2.html (1 of 2)

18  2004 Prentice Hall, Inc. All rights reserved. Outline dynamicstyle2.html (2 of 2)

19  2004 Prentice Hall, Inc. All rights reserved.

20 13.5 Dynamic Positioning XHTML elements can be positioned with scripting –Declare an element’s CSS position property to be either absolute or relative –Move the element by manipulating any of the top, left, right or bottom CSS properties

21  2004 Prentice Hall, Inc. All rights reserved. Outline dynamicposition.html (1 of 3)

22  2004 Prentice Hall, Inc. All rights reserved. Outline dynamicposition.html (2 of 3)

23  2004 Prentice Hall, Inc. All rights reserved. Outline dynamicposition.html (3 of 3)

24  2004 Prentice Hall, Inc. All rights reserved.

25 13.6 Using the frames Collection Referencing elements and objects in different frames by using the frames collection

26  2004 Prentice Hall, Inc. All rights reserved. Outline index.html (1 of 1)

27  2004 Prentice Hall, Inc. All rights reserved. Outline top.html (1 of 2)

28  2004 Prentice Hall, Inc. All rights reserved. Outline top.html (2 of 2)

29  2004 Prentice Hall, Inc. All rights reserved.

30 13.7 navigator Object Netscape, Mozilla, Microsoft’s Internet Explorer –Others as well Contains information about the Web browser Allows Web authors to determine what browser the user is using

31  2004 Prentice Hall, Inc. All rights reserved. Outline navigator.html (1 of 2)

32  2004 Prentice Hall, Inc. All rights reserved. Outline navigator.html (2 of 2)

33  2004 Prentice Hall, Inc. All rights reserved. 13.8 Summary of the DHTML Object Model applets all anchors embeds forms filters images links plugins styleSheets scripts frames plugins collection body screen document history navigator location event document object window Key Fig. 13.10DHTML Object Model.

34  2004 Prentice Hall, Inc. All rights reserved. 13.8 Summary of the DHTML Object Model

35  2004 Prentice Hall, Inc. All rights reserved. 13.8 Summary of the DHTML Object Model

36  2004 Prentice Hall, Inc. All rights reserved. 13.8 Summary of the DHTML Object Model

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