Lecture 11

Lecture 11 - 11/23/2011 CNIT 17600 IT Architectures Web...

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11/23/2011 1 CNIT 17600 IT Architectures Web Foundations Accessing Your Home Directory On campus: \\rosetta.ics.purdue.edu\ ”login Off campus: \\offcampus.ics.purdue.edu\ ”login PC Mac On campus: smb://rosetta.ics.purdue.edu Off campus: smb://offcampus.ics.purdue.edu
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11/23/2011 2 Introduction to Markup Languages 3 A language-like system that uses text annotations to describe how content will be used or displayed Originated in 1991 with a document detailing 12 tags Currently, definition and maintenance handled by the W3C World Wide Web Consortium Uses text files Relies on the use of tags , formally called elements Common Markup Languages 4 SGML (Standard Generalized Markup Language) ISO Standard for document markup HTML (HyperText Markup Language) Used to define the structure of a web page In the early days, used to define structure & presentation xHTML (eXtensible Hypertext Markup Language) HTML written following the strict rules of XML XML (XML stands for eXtensible Markup Language) Used to transport data CSS (Cascading Style Sheets) Used to define the presentation of a web page Required in xHTML 1.1
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11/23/2011 3 W3C Standards 5 HTML Current ratified standard is 4.01 (December 1999) HTML5 is currently a working draft xHTML Current ratified standard is 1.1 (November 2010) CSS Current ratified standard is CSS2 (Level 2) (April 2008) XML Two ratified standards exist: XML 1.0, 5 th Edition (November 2008) XML 1.1, 2 nd Edition (August 2006) What is a Markup Language? 6 Tags are used to instruct a browser how to render the content Tags carry the instructions Content goes between the tags <h1>CNIT 176 - Intro to HTML</h1> <p><strong>Name:</strong> Raymond Hansen</p> <p><strong>Email:</strong> hansenr@purdue.edu</p> <p><strong>Office:</strong> Knoy 217</p> <br /> <img src =“hansen1.jpg" /> HTML Markup
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11/23/2011 4 Markup Languages 7 <h1> and </h1> are the tags that instruct the browser how to “handle” the content Output Tags <h1> </h1> <p><strong>Name:</strong> Raymond Hansen</p> <p><strong>Email:</strong> hansenr@purdue.edu</p> <p><strong>Office:</strong> Knoy 217</p> <br /> <img src =“hansen1.jpg" /> Markup Languages 8 The content is “CNIT176 - Intro to HTML” Output Content <h1> </h1> <p><strong>Name:</strong> Raymond Hansen</p> <p><strong>Email:</strong> hansenr@purdue.edu</p> <p><strong>Office:</strong> Knoy 217</p> <br /> <img src =“hansen1.jpg" />
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11/23/2011 5 Markup Languages 9 Tags are either opening tags or closing tags When a tag doesn’t require a closing tag, it should be closed with “ / ”. Output
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Lecture 11 - 11/23/2011 CNIT 17600 IT Architectures Web...

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