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<HTML><HEAD><TITLE>XML中國論壇 - 初學進階 - 1.2.6 XML與HTML的比較</TITLE>
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<DIV class=pt10><B>1.2.6 XML與HTML的比較</B></DIV>
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<P
align=justify>通過前面這一番比較講解，相信大家已經不會再把XML和HTML混為一談了。不過初學者問得最多的問題就是XML與HTML有什么不同，鑒于這一點，我們再來列表把它們進行一個詳細的比較。</P>
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<TD vAlign=center width="24%" height=30><B>
<P align=center>比較內容</B></P></TD>
<TD vAlign=center width="38%" height=30><B>
<P align=center>HTML</B></P></TD>
<TD vAlign=center width="38%" height=30><B>
<P align=center>XML</B></P></TD></TR>
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<P align=center>可擴展性</P></TD>
<TD vAlign=center width="38%" height=40>
<P align=justify>不具有擴展性</P></TD>
<TD vAlign=center width="38%" height=40>
<P align=justify>是源置標語言，可用于定義新的置標語言</P></TD></TR>
<TR>
<TD vAlign=center width="24%" height=44>
<P align=center>側重點</P></TD>
<TD vAlign=center width="38%" height=44>
<P align=justify>側重于如何表現信息</P></TD>
<TD vAlign=center width="38%" height=44>
<P align=justify>側重于如何結構化地描述信息</P></TD></TR>
<TR>
<TD vAlign=center width="24%" height=59>
<P align=center>語法要求</P></TD>
<TD vAlign=center width="38%" height=59>
<P align=justify>不要求標記的嵌套、配對等，不要求標記之間具有一定的順序</P></TD>
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<P align=justify>嚴格要求嵌套、配對，和遵循DTD的樹形結構</P></TD></TR>
<TR>
<TD vAlign=center width="24%" height=45>
<P align=center>可讀性及可維護性</P></TD>
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<P align=justify>難于閱讀、維護</P></TD>
<TD vAlign=center width="38%" height=45>
<P align=justify>結構清晰，便于閱讀、維護</P></TD></TR>
<TR>
<TD vAlign=center width="24%" height=39>
<P align=center>數據和顯示的關系</P></TD>
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<P align=justify>內容描述與顯示方式整合為一體</P></TD>
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<P align=justify>內容描述與顯示方式相分離</P></TD></TR>
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<P align=center>保值性</P></TD>
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<P align=justify>不具有保值性</P></TD>
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<P align=justify>具有保值性</P></TD></TR>
<TR>
<TD vAlign=center width="24%" height=25>
<P align=center>編輯及瀏覽工具</P></TD>
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<P align=justify>已有大量的編輯、瀏覽工具</P></TD>
<TD vAlign=center width="38%" height=25>
<P
align=justify>編輯、瀏覽工具尚不成熟</P></TD></TR></TBODY></TABLE></CENTER></DIV></DIV>
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