spec:fetch; type:dfn; for:/; text:credentials

</pre>

<pre class=anchors>

urlPrefix: https://w3c.github.io/DOM-Parsing/; spec: dom-parsing

type: dfn; text: fragment serializing algorithm; url: dfn-fragment-serializing-algorithm

</pre>

<h2 id=introduction>Introduction</h2>

<li><p>Let <var>extractedContentType</var> be null.

<li><p>If <var>body</var> is a {{Document}}, then set <a>this</a>'s <a>request body</a> to

<var>body</var>, <a lt="fragment serializing algorithm">serialized</a>,

<var>body</var>, <a lt="fragment serializing algorithm steps">serialized</a>,

<a for=string>converted</a>, and <a lt="UTF-8 encode">UTF-8 encoded</a>.

<li>

<li><p>Otherwise, if <var>xhr</var>'s <a for=XMLHttpRequest>response</a>'s

<a for=response>aborted flag</a> is set, run the <a>request error steps</a> for <var>xhr</var>,

<a event for=XMLHttpRequest><code>abort</code></a>, and "{{AbortError!!exception}}"

<a event for=XMLHttpRequestEventTarget><code>abort</code></a>, and "{{AbortError!!exception}}"

{{DOMException}}.

<li><p>Otherwise, if <var>xhr</var>'s <a for=XMLHttpRequest>response</a> is a

<li><p>If <a>this</a>'s <a>state</a> is <i>opened</i> with <a>this</a>'s

<a><code>send()</code> flag</a> set, <i>headers received</i>, or <i>loading</i>, then run the

<a>request error steps</a> for <a>this</a> and <a event for=XMLHttpRequest><code>abort</code></a>.

<a>request error steps</a> for <a>this</a> and

<a event for=XMLHttpRequestEventTarget><code>abort</code></a>.

<li>

<p>If <a>this</a>'s <a>state</a> is <i>done</i>, then set <a>this</a>'s <a>state</a> to