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POIs it possible to retrieve the *full* HTML page source of an iframe with Javascript?
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copied!<p>I am trying to figure out how to retrieve the <strong>full</strong> (that means <strong>all data</strong>) HTML page source from an <code><iframe></code> whose <code>src</code> is from the same originating domain as the page that it is embedded on. I want the exact source code at any given time, which could be dynamic due to Javascript or php generating the <code><iframe></code> html output. This means AJAX calls like <a href="http://api.jquery.com/jQuery.get/" rel="nofollow noreferrer"><code>$.get()</code></a> will not work for me as the page could have been modified via Javascript or generated uniquely based on the request time or <a href="http://php.net/manual/en/function.mt-rand.php" rel="nofollow noreferrer"><code>mt_rand()</code></a> in php. I have not been able to retrieve the exact <code><!DOCTYPE></code> declaration from my <code><iframe></code>.</p> <p>I have been experimenting around and searching through Stack Overflow and have not found a solution that retrieves <strong>all</strong> of the page source including the <code><!DOCTYPE></code> declaration.</p> <p>One of the answers in <a href="https://stackoverflow.com/questions/982717/how-do-i-get-the-entire-pages-html-with-jquery#12523515">How do I get the entire page's HTML with jQuery?</a> suggests that in order to retrieve the <code><!DOCTYPE></code> information, you need to construct this declaration manually, by retrieving the <code><iframe></code>'s <code>document.doctype</code> property and then adding all of the attributes to the <code><!DOCTYPE></code> declaration yourself. Is this really the only way to retrieve this information from the <code><iframe></code>'s HTML page source?</p> <p>Here are some notable Stack Overflow posts that I have looked through and that this is not a duplicate of:</p> <ul> <li><a href="https://stackoverflow.com/questions/13913824/javascript-get-current-page-current-source">Javascript: Get current page CURRENT source</a></li> <li><a href="https://stackoverflow.com/questions/2419749/get-selected-elements-outer-html">Get selected element's outer HTML</a></li> <li><a href="https://stackoverflow.com/questions/4612143/how-to-get-page-source-using-jquery">https://stackoverflow.com/questions/4612143/how-to-get-page-source-using-jquery</a></li> <li><a href="https://stackoverflow.com/questions/982717/how-do-i-get-the-entire-pages-html-with-jquery">How do I get the entire page's HTML with jQuery?</a></li> <li><a href="https://stackoverflow.com/questions/9366382/jquery-get-all-html-source-of-a-page-but-excluding-some-ids">Jquery: get all html source of a page but excluding some #ids</a></li> <li><a href="https://stackoverflow.com/questions/5587844/jquery-get-html-including-the-selector">jQuery: Get HTML including the selector?</a></li> </ul> <p>Here is some of my local test code that illustrates my best attempt so far, which only retrieves the data within and including the <code><iframe></code>'s <code><html></code> tag:</p> <p><strong>main.html</strong></p> <pre><code><html> <head> <title>Testing with iframe</title> <script src="http://code.jquery.com/jquery-1.9.1.min.js"></script> <script type="text/javascript"> function test() { var doc = document.getElementById('iframe-source').contentWindow.document; var html = $('html', doc).clone().wrap('<p>').parent().html(); $('#output').val(html); } </script> </head> <body> <textarea id="output"></textarea> <iframe id="iframe-source" src="iframe.html" onload="javascript:test()"></iframe> </body> </html> </code></pre> <p><br /> <strong>iframe.html</strong></p> <pre><code><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html class="html-tag-class"> <head class="head-tag-class"> <title>iframe Testing</title> </head> <body class="body-tag-class"> <h2>Testing header tag</h2> <p>This is <strong>very</strong> exciting</p> </body> </html> </code></pre> <p><br /> And here is a <strong>screenshot</strong> of these files run together in Google Chrome version 27.0.1453.110 m: <img src="https://i.stack.imgur.com/y1LEk.png" alt="iframe testing"></p> <h3>Summary</h3> <p>As you can see, Google Chrome's <code>Inspect element</code> shows that within the <code><iframe></code> the <code><!DOCTYPE></code> declaration is present, so how can I retrieve this data with the page source? This question also applies to any other declarations or other tags that are not contained within the <code><html></code> tags.</p> <p><br /> Any help or advice on retrieving this full page source code via Javascript would be greatly appreciated.</p>

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