how to inject iframe with popup.html from content script

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I want to inject popup.html to web content. Below is my think
... page content

 <--! injected content !-->
   </script>
<ins class="adsbygoogle"
     style="display:block"
     data-ad-client="ca-pub-5408099190056760"
     data-ad-slot="7305827575"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script>        </div>
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                <span>2021-02-09 21:49</span>
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<p>That's possible. When manifest version 2 is active (introduced in Chrome 18, required in Chrome 23), you have to include the page in the "web_accessible_resources" section of the manifest file though:</p>

<pre><code>{ ...
    "web_accessible_resources": ["popup.html"],
  ...
}
</code></pre>

<p>The frame itself can be injected via a Content script, see the documentation for usage and examples:</p>

<pre><code>// Within a content script:
var f = document.createElement('iframe');
f.src = chrome.extension.getURL('popup.html');
document.body.appendChild(f); // Append to body, for example.
</code></pre>

<p>chrome.extension.getURL returns the absolute URL of <code>popup.html</code>, eg <code>chrome-extension://...32 letters.../popup.html</code>.</p>
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                //更多其他参数，请参考ueditor.config.js中的配置项
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