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HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20140912035713" timestamp="2014-09-12T03:57:13Z" ns="0" title="Arduino编程参考手册（多页面版）" />
        <page value="20140912035752" timestamp="2014-09-12T03:57:52Z" ns="0" title="Setup()" />
        <page value="20140912035821" timestamp="2014-09-12T03:58:21Z" ns="0" title="Arduino编程核心代码" />
        <page value="20140912040203" timestamp="2014-09-12T04:02:03Z" ns="0" title="Loop()" />
        <page value="20140912040225" timestamp="2014-09-12T04:02:25Z" ns="0" title="If" />
        <page value="20140912040251" timestamp="2014-09-12T04:02:51Z" ns="0" title="If...else" />
        <page value="20140912040308" timestamp="2014-09-12T04:03:08Z" ns="0" title="For" />
        <page value="20140912052035" timestamp="2014-09-12T05:20:35Z" ns="0" title="While" />
        <page value="20140912052115" timestamp="2014-09-12T05:21:15Z" ns="0" title="Do...while" />
        <page value="20140912052158" timestamp="2014-09-12T05:21:58Z" ns="0" title="Break" />
      </results>
    </querypage>
  </query>
</api>