You are looking at the HTML representation of the XML format.
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>
    <allimages gaicontinue="4位数码管-小数点.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="297" ns="6" title="File:0.96OLED.jpg" />
      <page pageid="224" ns="6" title="File:10K电位器.jpg" />
      <page pageid="715" ns="6" title="File:18650电池组模块-7.4V.jpg" />
      <page pageid="796" ns="6" title="File:32路舵机控制器V2.jpg" />
      <page pageid="253" ns="6" title="File:32路舵机控制器引脚示意图.png" />
      <page pageid="255" ns="6" title="File:32路舵机控制器连接示意图.jpg" />
      <page pageid="266" ns="6" title="File:32路舵机控制软件 V2.6.1.png" />
      <page pageid="208" ns="6" title="File:3P双杜邦头线.jpg" />
      <page pageid="222" ns="6" title="File:3P杜邦头转PH2.0.jpg" />
      <page pageid="223" ns="6" title="File:4p杜邦线.jpg" />
    </pages>
  </query>
</api>