917Chapter 32 .Embedded Objects The Odd Case of (Database web hosting)
Friday, February 29th, 2008917Chapter 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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