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INFO The World Wide Web had a number of differences from other hypertext systems that were then available. The Web required only unidirectional links rather than bidirectional ones. This made it possible for someone to link to another resource without action by the owner of that resource. It also significantly reduced the difficulty of implementing Web servers and browsers (in comparison to earlier systems), but in turn presented the chronic problem of link rot. Unlike predecessors such as HyperCard, the
World Wide Web was non-proprietary, making it possible to develop servers
and clients independently and to add extensions without licensing
restrictions. Among services
paid for by advertising, Yahoo! could collect the most data about users of
commercial websites, about 2,500 bits of information per month about each
typical user of its site and its affiliated advertising network sites.
Yahoo! was followed by MySpace with about half that potential and then by
AOL-TimeWarner, Google, Facebook, Microsoft, and eBay. While its name is similar to Java, JavaScript was developed by Netscape and
has very little to do with Java, although the syntax of both languages is
derived from the C programming language. In conjunction with a Web page's
Document Object Model (DOM), JavaScript has become a much more powerful
technology than its creators originally envisioned.[citation needed] The
manipulation of a page's DOM after the page is delivered to the client has
been called Dynamic HTML (DHTML), to emphasize a shift away from static HTML
displays. This allows the page to be more responsive,
interactive and interesting, without the user having to wait for whole-page
reloads. Ajax is seen as an important aspect of what is being called Web
2.0. Examples of Ajax techniques currently in use can be seen in Gmail,
Google Maps, and other dynamic Web applications. Wikipedia - A free encyclopedia with millions of articles contributed collaboratively using Wiki software, in dozens of languages. www.wikipedia.org Other Links defau link1 |