HTML 5 技術體系 -- 語意標記 (article & section)

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HTML4 ：目前的部落格描述方式
問題：有太多的 div 標記，很難用程式解析其語意關係。

<html>
  <head>
    <title>Mokka mit Schlag </title>
 </head>
<body>
<div id="page">
  <div id="header">
    <h1><a href="http://www.elharo.com/blog">Mokka mit Schlag</a></h1>
  </div>
  <div id="container">
    <div id="center" class="column">               
      <div class="post" id="post-1000572">
        <h2><a href=
      "/blog/birding/2007/04/23/spring-comes-and-goes-in-sussex-county/">
      Spring Comes (and Goes) in Sussex County</a></h2>

        <div class="entry">
          <p>Yesterday I joined the Brooklyn Bird Club for our
          annual trip to Western New Jersey, specifically Hyper
          Humus, a relatively recently discovered hot spot. It
          started out as a nice winter morning when we arrived
          at the site at 7:30 A.M., progressed to Spring around
          10:00 A.M., and reached early summer by 10:15. </p>
        </div>
      </div>

      <div class="post" id="post-1000571">
        <h2><a href=
          "/blog/birding/2007/04/23/but-does-it-count-for-your-life-list/">
           But does it count for your life list?</a></h2>

        <div class="entry">
          <p>Seems you can now go <a
          href="http://www.wired.com/science/discoveries/news/
          2007/04/cone_sf">bird watching via the Internet</a>. I
          haven't been able to test it out yet (20 user
          limit apparently) but this is certainly cool.
          Personally, I can't imagine it replacing
          actually being out in the field by any small amount.
          On the other hand, I've always found it quite
          sad to meet senior birders who are no longer able to
          hold binoculars steady or get to the park. I can
          imagine this might be of some interest to them. At
          least one elderly birder did a big year on TV, after
          he could no longer get out so much. This certainly
          tops that.</p>
        </div>
      </div>

      </div>

    <div class="navigation">
      <div class="alignleft">
         <a href="/blog/page/2/">&laquo; Previous Entries</a>
       </div>
      <div class="alignright"></div>
    </div>
  </div>

  <div id="right" class="column">
    <ul id="sidebar">
      <li><h2>Info</h2>
      <ul>
        <li><a href="/blog/comment-policy/">Comment Policy</a></li>
        <li><a href="/blog/todo-list/">Todo List</a></li>
      </ul></li>
      <li><h2>Archives</h2>
        <ul>
          <li><a href='/blog/2007/04/'>April 2007</a></li>
          <li><a href='/blog/2007/03/'>March 2007</a></li>
          <li><a href='/blog/2007/02/'>February 2007</a></li>
          <li><a href='/blog/2007/01/'>January 2007</a></li>
        </ul>
      </li>
    </ul>
  </div>
  <div id="footer">
    <p>Copyright 2007 Elliotte Rusty Harold</p>
  </div>
</div>

</body>
</html>

HTML5 ：新的部落格描述方式
解決：改用 section, article 的方式，以釐清哪些是文章，哪些是段落。

<html>
 <head>
    <title>Mokka mit Schlag </title>
 </head>
<body>
  <header>
    <h1><a href="http://www.elharo.com/blog">Mokka mit Schlag</a></h1>
  </header>
  <section>               
      <article>
        <h2><a href=
        "/blog/birding/2007/04/23/spring-comes-and-goes-in-sussex-county/">
         Spring Comes (and Goes) in Sussex County</a></h2>

        <p>Yesterday I joined the Brooklyn Bird Club for our
        annual trip to Western New Jersey, specifically Hyper
        Humus, a relatively recently discovered hot spot. It
        started out as a nice winter morning when we arrived at
        the site at 7:30 A.M., progressed to Spring around 10:00
        A.M., and reached early summer by 10:15. </p>
      </article>

      <article>
        <h2><a href=
          "/blog/birding/2007/04/23/but-does-it-count-for-your-life-list/">
          But does it count for your life list?</a></h2>

          <p>Seems you can now go <a
          href="http://www.wired.com/science/discoveries/news/
          2007/04/cone_sf">bird watching via the Internet</a>. I
          haven't been able to test it out yet (20 user
          limit apparently) but this is certainly cool.
          Personally, I can't imagine it replacing
          actually being out in the field by any small amount.
          On the other hand, I've always found it quite
          sad to meet senior birders who are no longer able to
          hold binoculars steady or get to the park. I can
          imagine this might be of some interest to them. At
          least one elderly birder did a big year on TV, after
          he could no longer get out so much. This certainly
          tops that.</p>
      </article>    
    <nav>
      <a href="/blog/page/2/">&laquo; Previous Entries</a>
    </nav>
  </section>

  <nav>
    <ul>
      <li><h2>Info</h2>
      <ul>
        <li><a href="/blog/comment-policy/">Comment Policy</a></li>
        <li><a href="/blog/todo-list/">Todo List</a></li>
      </ul></li>
      <li><h2>Archives</h2>
        <ul>
          <li><a href='/blog/2007/04/'>April 2007</a></li>
          <li><a href='/blog/2007/03/'>March 2007</a></li>
          <li><a href='/blog/2007/02/'>February 2007</a></li>
          <li><a href='/blog/2007/01/'>January 2007</a></li>
        </ul>
      </li>
    </ul>
  </nav>
  <footer>
    <p>Copyright 2007 Elliotte Rusty Harold</p>
  </footer>

</body>
</html>

檢視範例：http://dl.dropbox.com/u/6387819/html5/Semantics/TagStructure.htm

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