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<HTML><HEAD><TITLE>XML中国论坛 - 初学进阶 - 1.2.6 XML与HTML的比较</TITLE>
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<DIV class=pt10><B>1.2.6 XML与HTML的比较</B></DIV>
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<P
align=justify>通过前面这一番比较讲解，相信大家已经不会再把XML和HTML混为一谈了。不过初学者问得最多的问题就是XML与HTML有什么不同，鉴于这一点，我们再来列表把它们进行一个详细的比较。</P>
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<P align=center>比较内容</B></P></TD>
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<P align=center>HTML</B></P></TD>
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<P align=center>XML</B></P></TD></TR>
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<P align=center>可扩展性</P></TD>
<TD vAlign=center width="38%" height=40>
<P align=justify>不具有扩展性</P></TD>
<TD vAlign=center width="38%" height=40>
<P align=justify>是源置标语言，可用于定义新的置标语言</P></TD></TR>
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<P align=center>侧重点</P></TD>
<TD vAlign=center width="38%" height=44>
<P align=justify>侧重于如何表现信息</P></TD>
<TD vAlign=center width="38%" height=44>
<P align=justify>侧重于如何结构化地描述信息</P></TD></TR>
<TR>
<TD vAlign=center width="24%" height=59>
<P align=center>语法要求</P></TD>
<TD vAlign=center width="38%" height=59>
<P align=justify>不要求标记的嵌套、配对等，不要求标记之间具有一定的顺序</P></TD>
<TD vAlign=center width="38%" height=59>
<P align=justify>严格要求嵌套、配对，和遵循DTD的树形结构</P></TD></TR>
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<P align=center>可读性及可维护性</P></TD>
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<P align=justify>难于阅读、维护</P></TD>
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<P align=justify>结构清晰，便于阅读、维护</P></TD></TR>
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<P align=center>数据和显示的关系</P></TD>
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<P align=justify>内容描述与显示方式整合为一体</P></TD>
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<P align=justify>内容描述与显示方式相分离</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>
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<P align=center>编辑及浏览工具</P></TD>
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<P align=justify>已有大量的编辑、浏览工具</P></TD>
<TD vAlign=center width="38%" height=25>
<P
align=justify>编辑、浏览工具尚不成熟</P></TD></TR></TBODY></TABLE></CENTER></DIV></DIV>
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