Executable Content Tags

One of the ways in which Web pages have become more dynamic is through their support of executable content, such as Java applets and ActiveX controls. These page elements are downloaded to the browser and run in its memory space to produce dynamic content on the browser screen. For placing executable content in web page, HTML uses <APPLET> tag (for Java applets), <OBJECT> tag (for other executable objects) and <PARAM> tag (for passing parameters to applet and object tags).

Tag	Function
<APPLET> (Container tag) (Attributes – 11)	Places a Java applet on a page. The <APPLET> tag has been deprecated in favor of using the more generic <OBJECT> tag to place applets
<OBJECT> (Container tag) (Attributes – 1)	Places an executable object on a page
<PARAM> (Standalone) (Attributes – 5)	Passes a parameter to a Java applet (<APPLET>) or other executable object (<OBJECT>)

Tag: <APPLET>

Attribute	Description and values
ALIGN	Positions adjacent text at the TOP, MIDDLE, or BOTTOM of the applet window, or can float the window in the LEFT or RIGHT margin
ALT	Provides a text-based alternative to the applet
ARCHIVE	comma-delimited list of archive locations
CODE	Specifies the class file
CODEBASE	URL of the code
HEIGHT	Specifies the height of the applet window in pixels. HEIGHT is a required attribute of the <APPLET> tag
HSPACE	Controls the amount of whitespace (in pixels) to the left and right of the applet window
NAME	Gives the applet a unique name so that it can be referenced by other Java applets
OBJECT	Provides the name of a serialized applet file
VSPACE	Controls the amount of whitespace (in pixels) above and below the applet window.
WIDTH	Specifies the width of the applet window in pixels. WIDTH is a required attribute of the <APPLET> tag.

Tag: <OBJECT>

Attribute	Description and values
ALIGN	Controls how content adjacent to the object area is aligned
WIDTH and HEIGHT	Specifies the dimensions of the object area as a number of pixels or as a percentage of available space
BORDER	Border thickness in pixels
HSPACE and VSPACE	Controls the amount of whitespace around the object area
ARCHIVE	Comma-delimited list of archive locations
CLASSID	Identifies which implementation or release of the object is being used
CODEBASE	URL of the object
CODETYPE	Describes the code's MIME type
DATA	List of URLs where data for the object can be found
DECLARE	Instructs the browser to declare, but not instantiate, a flag for the object
STANDBY	Enables to display a message to the user while the object is loading
TYPE	Specifies the MIME type of the data passed to the object
USEMAP	Points to client-side map data, if imagemaps are used

Tag: <PARAM>

Attribute	Description and values
ID	Assigns a unique identifying name to the parameter
NAME	Provides the name of the parameter
TYPE	Tells the browser what the parameter's Internet media (MIME) type is
VALUE	Specifies the value of the parameter
VALUETYPE	Provides more detail about the nature of the VALUE being passed and can be set to DATA, REF, or OBJECT