Its World Wide! I NTRODUCTION TO T HE WEB 1 Photo courtesy: WWW WWW Provides a single interface to the network of networks. WWW is composed of: A protocol: HTTP A data standard: HTML A naming standard: URI/URL/URN Web Browser A program that provides a graphical interface with the web. In other words, a way to push buttons so that HTTP protocols are invoked using URIs to obtain and render HTMLs. 2 WWW The internet is a global network of computers Web applications follow a client-server architecture client : the web browser Firefox Chrome Opera Safari Explorer server : the web server Apache IIS Tomcat 3 C LIENT / S ERVER Clients request documents from servers The request is sent via HTTP and may contain data Servers respond to requests The response is sent via HTTP and is probably HTML 4 ChromeServer HTTP REQUEST HTTP RESPONSE S ERVERS AND B ROWSERS The web uses a client-server architecture Web browser is the client Web server is the server 5 W EB P ROGRAMMING T OOLS Writing a web app involves many technologies: Client (browser) side: HTML5 a standard document structure XML a standard document structure JavaScript a language for client-side programming CSS styling the web page Server side: Servlets/JSP/JSF Java based PHP server-side scripting language Ruby server-side scripting language ASP.NET Microsoft solution MySQL - database 6 S YLLABUS In two weeks we will talk about HTML (2-3 days) CSS (2-3 days) JavaScript (2-3 days) JQuery (1-2 days) Bootstrap (1-2 days) Every day we will Talk about UW-L Talk about web development Talk about how to succeed at UW-L 7