from a document">removed from the document</span>, has no associated browsing context, since that

browsing context was <span data-x="a browsing context is discarded">discarded</span>.</p>

<div class="example">

<p>The following example illustrates the various possibilities of a <span>browsing context</span>.

It can be <span>disowned</span>, <span>is closing</span>, neither, or both.</p>

<pre><code class="js">// Neither disowned nor is closing:

const popup1 = window.open();

// Disowned, but not is closing:

const popup2 = window.open();

popup2.opener = null;

// Not disowned, but is closing:

const popup3 = window.open();

popup3.close();

// Disowned, is closing:

const popup4 = window.open();

popup4.opener = null;

popup4.close();</code></pre></div>

<h4>Creating browsing contexts</h4>