EECS 1520 Lecture Notes - Lecture 21: Cascading Style Sheets, Hypertext Transfer Protocol, Web Analytics

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: Steven Castellucci

Document Summary

A way of accessing information on the internet. Information is encapsulated in a web page and viewed in web browser (e. g. , edge, chrome, Web pages are linked to one another via hypertext links. Clicking on a link accesses the associated web page or resource. Method of requesting and transmitting web pages. When user clicks on a link or enters a url in a browser, a request is sent to the http port (80 or: of the associated web server. The se(cid:396)(cid:448)e(cid:396) the(cid:374) (cid:396)espo(cid:374)se to the (cid:272)lie(cid:374)t"s (cid:396)e(cid:395)uest. If the request is valid and the resource is available, the server transmits the resource: otherwise, the server responds with an error message or not at all. This exchange happens not just for the web page, but for all resources required to display the web page (e. g. , images, video, style and script files) System that searches the web and catalogues (indexes) the content of web pages.