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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.
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<?xml version="1.0"?>
<api>
<query>
<allcategories>
<c size="2" pages="2" files="0" subcats="0" xml:space="preserve">Wiki研究</c>
<c size="2" pages="2" files="0" subcats="0" xml:space="preserve">个人维基</c>
<c size="1" pages="1" files="0" subcats="0" xml:space="preserve">个人维基自带页面</c>
<c size="1" pages="1" files="0" subcats="0" xml:space="preserve">内容管理系统</c>
<c size="3" pages="3" files="0" subcats="0" xml:space="preserve">初次使用</c>
<c size="2" pages="1" files="1" subcats="0" xml:space="preserve">维基百科</c>
<c size="2" pages="2" files="0" subcats="0" xml:space="preserve">维基研究</c>
<c size="1" pages="1" files="0" subcats="0" xml:space="preserve">语法沙盒</c>
</allcategories>
</query>
</api>