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Web

Web. Internet, Http, Html, JavaScript. PREPARED BY. Agenda. 이야기들 … 인터넷 , 주소 , 도메인네임 도대체 How 웹사이트 Works? What are HTML, JavaScript, Flash Overview of Service-Side Technologies. 인터넷 이야기 …. Inter-Networking 의 준말 TCP/IP 라는 규약에 의해 주고 받는 공개 컴퓨터 통신망

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Web

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  1. Web Internet, Http, Html, JavaScript PREPARED BY

  2. Agenda • 이야기들…인터넷, 주소, 도메인네임 • 도대체 How 웹사이트 Works? • What are HTML, JavaScript, Flash • Overview of Service-Side Technologies

  3. 인터넷 이야기… • Inter-Networking 의 준말 • TCP/IP라는 규약에 의해 주고 받는 공개 컴퓨터 통신망 • 1960~1970 미국국방성(DoD) 시작, ARPANET 통신망으로 시작 • 대표적 프로토콜/서비스: Email(SMTP,POP3), FTP, Telnet, Http(=WWW,Web) … • Http는 html을 주고 받는 프로토콜, 가장 대중적인 서비스 • Version 1.0 – 1996년, Version 1.1 – 1999년 • Web Browsers: Internet Explorer, Firefox, Netscape Navigator, Safari, Opera…

  4. 주소(IP address) 이야기… • DNS (Domain Name Service) • 도메인네임 <-> 네트워크 주소(숫자) : 네트워크는 숫자의 연산으로 이루어지기때문… • Ping – IP로 특정 컴퓨터(호스트) 도달 여부 테스트 도구 • 흔히 네트워크 주소를 알기위해 쓰이기도 함 • Port • Web=80, FTP=21, Email=25…

  5. 도메인네임 이야기… • 넓은 의미: 네트워크상의 컴퓨터 식별하는 호스트명 • 좁은 의미: Domain Registrar에 등록된 이름 • “웹주소”아 아님 • ICANN: 국제 인터넷 주소자원 관리 기관: • DNS 기술적 관리, IP address 관리,root server… • TLD : Top Level Domain (com, org, edu, mil…) • Price: ex.)Business.com($7.5m in 1999), diamond.com($7.5m in 2006), Pizza.com($2.6m in 2008, $20 in 1994), Newhope.us(?)

  6. How WWW Works 1. Type URL/domain name 2. Get IP address for the domain name DNS Server 3. Send a web request data through all the routers 7. Get all the web files and render a page using html on web browser 4. Receive a web request data 6. Returns all the web files and generated data 5. Translate a web request and get necessary web files (html, images, flash files…)

  7. What Html Looks Like <html> <head>Usually put title</head> <body> <h2>My first webpage!</h2> <p> Welcome to my cool web site </p> <table> <tr><td>Col1</td><td>col2</td></tr> <tr><td>New</td><td>Hope</td></tr> </table> </body> </html>

  8. Web Page Objects/Elements • Window • Document • Form • Controls

  9. Request Methods: POST vs. GET • GET • - Send data in URL (It’s called “query string”.) • - Used when sending small data • POST • - Send data in separate section • - Used when sending large amount of data <form action=“submit.php” method=“post”> Email: <input name=“ToEmailAddress”> <br /> Message: <textarea name=“Message”></textarea><br /> <input type=“submit” value=“Send Message”> </form>

  10. JavaScript • Document Object Model • Any elements on page can be controlled by JavaScript • Inside <Script> tag • Inside event attributes such as “onclick”, “onload” • Can include external JavaScript file

  11. Server-Side Script • Provides Dynamic Content Web Site • Can be connected to database system • CGI in Perl • JSP (Java Server Pages by Sun Microsystems) • Cold Fusion ( Macromedia/Adobe) • ASP (Active Server Page by Microsoft) • ASP.NET (1.1, 2.0, 3.0, 3.5) by Microsoft • PHP (Open Source) • More….

  12. What is Web 2.0? • 유저들이 생산하는 콘텐츠 • 데이타 공유 • 영원한 베타 • 기술면: css, xhtml, Ajax, RSS, 간결한 URL, 블로그, 디자인특징 • 예: Google, Flickr, Wikipedia,

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