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Chapter 12. Executable Content > Embedded Content

12.2. Embedded Content

In this section, we cover three tags that support embedded content. The <object> tag is in the HTML 4 and XHTML standards. It is a generalized hybrid of the deprecated <applet> tag for embedding applets, particularly Java applets, and the <embed> tag extension that lets you include an object whose MIME type references the plug-in needed to process and possibly display that object.

The latest standards strongly encourage you to use the <object> tag to include applets as well as a variety of discrete inclusions in your documents, even images (although the standards do not go so far as to deprecate the <img> tag). Use <object> with the classid attribute to insert Java and other applets into a document, along with their execution parameters as contents of the associated <param> tag. And with <object>, use the data attribute to download and display non-HTML/XHTML content, such as multimedia, in the user's computing environment. Object data may be processed and rendered by an included applet, by utilities that come with your browser, or by a plug-in ("helper") application that the user supplies.


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