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→How they work
==How they work==
==How they work==
Modern websites generally try to create the impression of coherent session, with the user exploring and interacting with many webpages which all have the same look and fell. In reality, the basic website is typically composed of many independent pages (each of which is a separate file on the web server), which the web browser downloads one at a time, and displays. Web 2.0 sites which take information in from the user also upload any needed data (such as user comments or [[wiki]] edits) to the server. Scripts on the page may also make some pages more interactive, and add functionality. To offer user sessions, [[Internet cookie|cookies]] are typically used so that the server can identify the user each time they [[download]] or [[upload]] content. In this case, the web browser presents the cookie (which is a pseudorandom code) every time the browser interacts with the server; this enables users to have accounts and customization options on websites.<br />
Modern websites generally try to create the impression of coherent session, with the user exploring and interacting with many webpages which all have the same look and fell. In reality, the basic website is typically composed of many independent pages (each of which is a separate file on the web server), which the web browser downloads one at a time, and displays. Web 2.0 sites which take information in from the user also upload any needed data (such as user comments or [[wiki]] edits) to the server. Scripts on the page may also make some pages more interactive, and add functionality. To offer user sessions, [[Internet cookie|cookies]] are typically used so that the server can identify the user each time they [[download]] or [[upload]] content. In this case, the web browser presents the user token from that cookie (which is a pseudorandom code) every time the browser interacts with the server; this enables users to have accounts and customization options on websites.<br />
Some newer websites attempt to have only one landing page. In this case, users who think they are accessing multiple pages are actually triggering scripts on the one page which then displays the desired material, but without downloading a new web page.
Some newer websites attempt to have only one landing page. In this case, users who think they are accessing multiple pages are actually triggering scripts on the one page which then displays the desired material, but without downloading a new web page.