Javascript can be viewed and edited on the page. It is not the same as Java. Search Engine A search engines allows readers to enter key words to locate specific information on the Web, thus turning the Web into an enormous, accessible database. Some examples of commonly used search engines include Yahoo, Alta Vista, Excite, and Hotbot. Search engines obtain information about what is on pages most commonly by sending out remote scanners, called spiders or robots, to search sites for key words.
Some Web sites have their own search engines, which direct readers only to pages on that site.
Servers and Clients Servers are computers where information that is accessible to other computers resides. For example, the pages on Web sites reside on servers. Using the common communications protocols, readers' browsers contact servers to get the information they contain. The browsers then assemble the pages on the readers' computers. Some programs necessary for viewing certain pages reside on the server.