Which is the difference between srcdoc=“…” and src=“data:text/html,…” in an <iframe>?

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不要未来只要你来 2020-12-04 16:33
For example, which is the difference between these:
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                <span>(楼主)</span>
            
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                <span>2020-12-04 16:58</span>
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<p>As of writing - srcdoc in Chrome  (v36) allows the setting and fetching of cookies, whereas the use of src with data URL does not:</p>

<blockquote>
  <p>Uncaught SecurityError: Failed to read the 'cookie' property from 'Document': Cookies are disabled inside 'data:' URLs</p>
</blockquote>

<p>This may or may not be important to you, but rules out the use of data URLs in the application I am building, which is a shame, as of course IE doesn't support srcdoc currently (v11).</p>
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