Archive for February, 2008

917Chapter 32 .Embedded Objects The Odd Case of (Database web hosting)

Friday, February 29th, 2008

917Chapter 32 .Embedded Objects The Odd Case of the PARAM Element HTML pages pass parameters to Java applets, plug-ins, and ActiveX controls by way of PARAM elements that are nested inside APPLET, EMBED, and OBJECT elements. Although a PARAM element object is defined by the W3C DOM Level 2 specification, it does not show up on some browsers radar when you try to reference the PARAM element by itself. Even assigning an ID to a PARAM element or using document.getElementsByTagName( PARAM ) fail to allow references to access an individual PARAM element object. At most, you can retrieve the innerHTML property of the surrounding element. But even here, the values returned may not necessarily be precisely the HTML you specify in the document. In practice, this limitation is not particularly important. For one thing, even if you could access the PARAM elements of an embedded object or program, attempts to modify the values would be wasted: Those values are read at load time only. Secondly, a well-designed plug-in, applet, or ActiveX control will provide its own properties or methods to retrieve the current settings of whatever properties are initialized via the PARAM elements. … PARAM
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916 Part III . Document Objects Reference pluginspage (Web site domain)

Friday, February 29th, 2008

916 Part III . Document Objects Reference pluginspage Value: String Read-Only Compatibility NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 . IE5 . IE5.5 . The pluginspage property represents the PLUGINSPAGE attribute of the EMBED element. This attribute is a URL that gets applied to a link in the browser if the plug-in associated with the external file s MIME type cannot be found on the client. Related Items: None. src Value: String Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The src property represents the SRCattribute of the EMBED element. This attribute points to the external file that is to be loaded into the browser via the associated plug-in. Scripts can assign a new URL string to this property to load a different file into the current plug-in. Related Items: None. units Value: String Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The units property returns the unit of measure assigned with the length value of the height and widthproperties. In IE4, this property returned only px. The property does not appear to be connected in IE5.5, so it is probably deprecated in IE. Related Items: height, width properties. EMBED.units
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915Chapter 32 .Embedded Objects heightwidth Value: Integer Read/Write (Anonymous web server)

Thursday, February 28th, 2008

915Chapter 32 .Embedded Objects heightwidth Value: Integer Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The height and widthproperties represent the HEIGHTand WIDTH attributes of the EMBED element. While these values should be set via attributes in the tag, these properties can adjust the size of the element after the fact in IE5+. Related Items: None. hidden Value: Boolean Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The hidden property represents the HIDDENattribute of the EMBED element. When an EMBED element is hidden, neither controller nor the content is shown. Application of this element in modern browsers should use style sheets to hide and show the element. Related Items: style.visibility property. name Value: String Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The name property represents the NAMEattribute of the EMBED element. The better form is to assign an ID to the EMBED element and use accepted reference syntax for element ids. Related Items: None. EMBED.name
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Web hosting domain names - 914 Part III . Document Objects Reference Syntax

Thursday, February 28th, 2008

914 Part III . Document Objects Reference Syntax Accessing EMBED element object properties or methods: (IE4+) [window.]document.all.objectID.property | method([parameters]) (IE5+/NN6) [window.]document.getElementById( objectID ).property | method([parameters]) About this object An EMBED element is a carryover from the early browser days. Although never adopted by the W3C HTML standard, the EMBED element has been used in NN and IE as a way to embed non-native content (for example, sounds, video clips, and custom MIME types for plug-ins, such as Shockwave) into a page. What gets embed ded into the page is the controller or viewer for whatever kind of data the EMBED element points to (via the SRC attribute). The EMBED element is far less sophisticated than the OBJECT element, but current browsers continue to support it. If you have been using the EMBED element in previous applications, it may be a good idea to start gravitating toward the OBJECT element. For backward compatibility purposes, nesting an EMBED element inside an OBJECT element is not uncommon, both of which attempt to load the same content and plug-in. Browsers that know about the OBJECT element will load the content that way; older browsers will use the EMBED element and its attributes and parameters. Because an EMBED element loads a plug-in (including ActiveX control types of plug-ins in IE/Windows), you can reference the plug-in s properties and methods through the EMBED object s reference. Properties align Value: String Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The align property controls either the horizontal or vertical alignment of the element with regard to surrounding content. String values of leftor rightcause the object rectangle to cling to the left or right edges of its next outermost positioning context. String values of absbottom, absmiddle, baseline, bottom, middle, texttop, or top influence the vertical alignment with respect to adjacent text, with the same kind of results as corresponding values of the style.verticalAlign property. Related Items: style.verticalAlign property. EMBED.align
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913Chapter 32 .Embedded Objects type Value: String Read-Only (Starting a web site)

Thursday, February 28th, 2008

913Chapter 32 .Embedded Objects type Value: String Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The type property represents the TYPEattribute of the OBJECT element, which, in theory anyway, is intended to warn the browser about the MIME type of data that is to be loaded into the object s process. I say in theory because the HTML 4.0 specification links the TYPE attribute to the DATA attribute, which points to the data to be loaded to support whatever program code is loaded via the CLASSIDor CODE attribute. But through IE5.5, there is no support for the DATAattribute. Related Items: codeType property. vspace See hspace. width See height. EMBED Element Object For HTML element properties, methods, and event handlers, see Chapter 15. Properties Methods Event Handlers align (Object methods) onLoad height onScroll hidden name pluginspage src units width (Object variables) EMBED
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912 Part III . Document Objects Reference attributes

Wednesday, February 27th, 2008

912 Part III . Document Objects Reference attributes in the tag, these properties can adjust the size of the padding around the element after the fact in IE5+. Related Items: height, width properties. name Value: String Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The name property represents the NAMEattribute of the OBJECT element. The better form is to assign an ID to the OBJECT element and use accepted reference syntax for element ids. Related Items: None. object Value: External Object Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The object property returns a reference to the object contained by the OBJECT element. This property is essential if the program running inside the OBJECT element has the same property or method names as the OBJECT element itself. For example, consider a Java applet loaded into the OBJECT element as follows: If the applet code contained a public variable called height, an attempt to read or write that property through the OBJECT element will cause the element s properties to be read, and not the applet s properties. Therefore, if you insert the object property in the reference, the script reaches into the applet object for the property: document.getElementById( myAPPLET ).object.height = 40 If there is no ambiguity between element and object property and method names, the browser looks first at the element and then the object to find a match. Related Items: None. OBJECT.object
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911Chapter 32 .Embedded (Geocities web hosting) Objects load, if the attribute

Wednesday, February 27th, 2008

911Chapter 32 .Embedded Objects load, if the attribute is available. This facet is discussed in Chapter 28 s coverage of plug-in detection for IE/Windows. Related Items: code property. codeType Value: String Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The codeType property is a string of the MIME type of whatever object is pointed to by the CODEattribute value. Related Items: type property. heightwidth Value: Integer Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The height and widthproperties represent the HEIGHTand WIDTH attributes of the OBJECT element. While these values should be set via attributes in the tag, these properties can adjust the size of the embedded element after the fact in IE5+. Related Items: hspace, vspace properties. hspace vspace Value: Integer Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The hspace and vspaceproperties represent the HSPACEand VSPACE attributes of the OBJECT element, which control the number of pixels of transparent padding around the OBJECT element on the page. While these values should be set via OBJECT.hspace
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910 Part III . (Web design online) Document Objects Reference The

Tuesday, February 26th, 2008

910 Part III . Document Objects Reference The classid property represents the CLASSIDattribute of the OBJECT element. IE for Windows uses this attribute to assign the Globally Unique ID (GUID) of an ActiveX control. For example, to load a (nearly) invisible Windows Media Player object into a page, the HTML is as follows: If your script then accesses the classidproperty of the medPlayerobject, the value returned is the complete string as assigned to the attribute: CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95 Note that the CLSID:prefix is also part of the string value. Even if the object does not load (for example, because the object is missing or an error is in the long CLASSID string), the property value reports the value as assigned to the attribute. The HTML 4.0 specification indicates that the CLASSIDattribute be used for any kind of external class files, including Java applets. But in practice, IE wants applet URLs supplied to the CODEattribute (a non-HTML 4.0 attribute). Related Items: code property. code Value: String Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The code property is the URL string of a Java class file that is to begin loading the applet (or the property may be the entire applet if it consists of a single class file). You cannot change the code assigned to an applet after the element has loaded (even if the applet code did not load successfully). Related Items: codeBase property. codeBase Value: String Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The codeBase property is the string of the path on the server to the source of the applet or ActiveX control referenced by the CLASSID or CODE attributes. IE4+ also uses the CODEBASE attribute to specify a minimum version of control that is to OBJECT.codeBase
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Best web design - 909Chapter 32 .Embedded Objects alt Value: String Read/Write

Tuesday, February 26th, 2008

909Chapter 32 .Embedded Objects alt Value: String Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . The altproperty represents the ALTattribute, which should contain text that displays in the browser in the event that the object or its data do not load. This infor mation should be set as the OBJECT element s attribute, because assigning text to the property after the object attempts to load does not insert the text into the page. Related Items: altHTML property. altHTML Value: String Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The altHTML property is supposed to provide an OBJECT element with HTML content to render if the object doesn t load. In practice, assigning an HTML string to this property has no effect on an OBJECT element. Related Items: alt property. BaseHref Value: String Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The BaseHref property returns the full URL path to the current document. Related Items: None. classid Value: String Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . OBJECT.classid
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908 Part (Database web hosting) III . Document Objects Reference About

Monday, February 25th, 2008

908 Part III . Document Objects Reference About this object The OBJECT element is intended to be the primary way to add external content (that is, content that the browser itself does not render) to a page. For example, IE/Windows uses it to load ActiveX controls (whether from the server or locally). The OBJECT element is also destined to replace usage of the APPLET and EMBED elements. As with the APPLET element object, scripts can frequently control the programs and plug-ins that get loaded into the browser through the OBJECT tag. Chapter 44 shows you how to do that for common objects. The property listings here are merely for the properties of the element, most of which mimic the attributes available for the OBJECT element. Even though the properties are exposed, they are very rarely scripted, except perhaps to adjust the size of the space occupied by a media controller. Most properties are read-only after their values are set by attributes in the element s tag. But if your scripts are creating the OBJECT element anew, then scripts can set the property values the first time to initialize the object. In the list of properties that begins this object s coverage, several are marked with an asterisk (*). These properties are defined in the W3C DOM Level 2 specification, and placeholders are included in the NN6 code. But as of this writing, there is no indication that these properties are connected. A large set of event handlers for this element (all but onLoadand onScroll) is related to the application of IE/Windows data binding for PARAM elements nested inside an OBJECT element. These events fire when a variety of actions occur to the data source or recordset associated with the program associated with the element. For more about applying data binding to an OBJECT element, see http://msdn. microsoft.com/workshop/author/databind/dataconsumer.asp. Properties align Value: String Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The align property controls either the horizontal or vertical alignment of the element with regard to surrounding content. String values of leftor rightcause the object rectangle to cling to the left or right edges of its next outermost positioning context. String values of absbottom, absmiddle, baseline, bottom, middle, texttop, or top influence the vertical alignment with respect to adjacent text, with the same kind of results as corresponding values of the style.verticalAlign property. Related Items: style.verticalAlign property. OBJECT.align
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