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Uniform Resource Locators (URLs) - PowerPoint PPT Presentation


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Uniform Resource Locators (URLs). Scheme. Port Number. Query. http://www.company.com:81/a/b/c.html?user=Alice&year=2008#p2. Host Name. Hierarchical portion. Fragment. <a> Examples. Full URL: <a href ="http://www.xyz.com/news/2009.html">2009 News</a>

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uniform resource locators urls
Uniform Resource Locators (URLs)

Scheme

Port Number

Query

http://www.company.com:81/a/b/c.html?user=Alice&year=2008#p2

Host Name

Hierarchical portion

Fragment

CS 142 Lecture Notes: URLs and Links

a examples
<a> Examples
  • Full URL:<a href="http://www.xyz.com/news/2009.html">2009 News</a>
  • Relative location:<a href="2008/March.html">same ashttp://www.xyz.com/news/2008/March.html
  • Absolute location in same site:<a href="/stock/quote.html">same ashttp://www.xyz.com/stock/quote.html
  • New location, same page:<a href="#sec3">
  • Anchor definition:<a name="sec3">...</a>

CS 142 Lecture Notes: URLs and Links

other uses of urls
Other Uses of URLs
  • Images:

<imgsrc="icon.gif" />

  • Stylesheets:

<link rel="stylesheet" type="text/css" href="main.css" />

  • Embedded page:

<iframesrc="http://www.google.com" />

CS 142 Lecture Notes: URLs and Links

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