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Definitions from the Sharpened Glossary
Image Map
An image that contains more than one hyperlink on a Web page. Clicking on different parts of the image links the user to other resources on another part of the Web page, a different Web page, or a file. Often an image map, which can be a photograph, drawing, or a composite of several different drawings or photographs, is used as a map to the resources found on a particular Web site.
Impression
An impression is counted each time a Web page is shown to a visitor. Advertisers measure the reach of their ads by tracking ad impressions, or the number of times their ads are shown.
Inbound Link
A link from an external domain to a web site. Inbound links are used to measure link popularity.
IP Address
Internet Protocol address. The standard way of identifying a computer that is connected to the Internet, much the way a telephone number identifies a telephone on a telephone network.
IRC
Stands for "Internet Relay Chat." IRC makes it possible for people using the Internet to converse with each other in real time by typing messages back and forth. In order to talk to someone through IRC, you need to connect to the same IRC server. When you and others connect to the server, you can join a channel (a.k.a. chat room), and talk with the other people who have joined that channel. Usually, channels have specific topics like "teenchat," "macusers," or "folksingingmotorcyclists." To connect to an IRC server, you'll need a software program like Ircle (Mac) or mIRC (Windows). Most IRC programs also let you transfer files with other users, which is a cool feature, but has also led to a lot of software piracy.
ISP
Abbreviation for Internet Service Provider. An organization that provides access to the Internet.
JavaScript
A programming language that is typically used in web pages. It is used to add features that make the web page more interactive. JavaScript was invented by Netscape and was originally going to be called "LiveScript". But, due to the popularity of Java, the name was changed to JavaScript. Both JavaScript and Java are two different programming languages.
JPG
Abbreviation for Joint Photographic Group. A type of image format for Web graphics. Unlike .gif, the .jpg format supports up to 16 million colors which makes it a superior method of presenting color photographs. Although, JPG files cannot be animated or made transparent.
JSP
Stands for "Java Server Page." This standard was developed by Sun Microsystems as an alternative to Microsoft's active server page (ASP) technology. JSP pages are similar to ASP pages in that they are compiled on the server, rather than in a user's Web browser. After all, they don't call them "server pages" for nothing. However, JSP is Java-based, whereas ASP is Visual Basic-based. JSP pages are useful for building dynamic Web sites and accessing database information on a Web server. Though JSP pages may have Java interspersed with HTML, all the Java code is parsed on the server. Therefore, once the page gets to the browser, it is only HTML. JavaScript, on the other hand, is usually parsed by the Web browser, not the Web server.
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