Meta information means “information about information.”
In HTML, meta tags describe the content of the document in which they’re written. Meta tags have two possible attributes:
<META HTTP-EQUIV="name" CONTENT="content">
<META NAME="name" CONTENT="content">
. Meta tags with an
attribute are analogous to
headers that can control the action of browsers. Meta tags with a
attribute are used primarily by indexing and searching tools. These tools can gather meta information in order to sort and classify web pages. One way to help your document show up more frequently in search engines and directories is to use the
attribute to set keywords that will pull up your site when someone does a search for those words.
Setting a dHTML element’s behavior attribute allows you to customize the element.
Microsoft implemented the behavior attribute of Cascading Style Sheets in a way that enabled object-oriented programming to enter the world of web authoring. By encapsulating dHTML in an external object, the properties and methods of that object can be used. A web page can then use these objects with the behavior attribute. This means, for example, that a web author no longer had to perform an explicit browser detection.
When you type regular letters, numbers, and characters from your keyboard into the body of an HTML document, they show up on your Web pages just as you typed them. But things aren’t so easy in non-English speaking countries (and such places do exist – honest). Languages such as French, German, and Icelandic often use characters that are not found on your typical keyboard. Even in English, accents can distinguish a “résumé” from a “resume.”
So how do you make special characters and accented letters show up on your pages? You use a special set of codes called character entities, which you insert into your HTML code and which your browser will display as the corresponding symbols or characters you want.
Continue Reading “Write Symbols and Special Characters in HTML” »
Common Gateway Interface (CGI) describes a server-side program that receives and processes information sent from a web form.
CGI programs are the most common way to exchange and process information between a web page. They can be written in any practically any programming language and are run on web servers.
In object-oriented programming, an object is a self-contained entity that consists of both data and manipulation procedures.
Similarly, HTML 4.0 includes the <OBJECT> element to extend HTML in order to make it more dynamic. <OBJECT> allows an author to download external data or programs into the current page. This element can be used to gather other pieces of information, including Java applets, ActiveX controls, and possibly dHTML. The long-term goal of the World Wide Web Consortium (W3C) is for the <OBJECT> element to become the only way to embed data, replacing the <APPLET> and <IMG> elements.