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POParse HTML and preserve original content
 

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    <p>I have lots of HTML files. I want to replace some elements, keeping all the other content unchanged. For example, I would like to execute this jQuery expression (or some equivalent of it):</p> <pre><code>$('.header .title').text('my new content') </code></pre> <p>on the following HTML document:</p> <pre><code>&lt;div class=header&gt;&lt;span class=title&gt;Foo&lt;/span&gt;&lt;/div&gt; &lt;p&gt;1&lt;p&gt;2 &lt;table&gt;&lt;tr&gt;&lt;td&gt;1&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt; </code></pre> <p>and have the following result:</p> <pre><code>&lt;div class=header&gt;&lt;span class=title&gt;my new content&lt;/span&gt;&lt;/div&gt; &lt;p&gt;1&lt;p&gt;2 &lt;table&gt;&lt;tr&gt;&lt;td&gt;1&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt; </code></pre> <p>The problem is, all parsers I’ve tried (<a href="http://nokogiri.org/" rel="noreferrer">Nokogiri</a>, <a href="http://www.crummy.com/software/BeautifulSoup/" rel="noreferrer">BeautifulSoup</a>, <a href="https://code.google.com/p/html5lib" rel="noreferrer">html5lib</a>) serialize it to something like this:</p> <pre><code>&lt;html&gt; &lt;head&gt;&lt;/head&gt; &lt;body&gt; &lt;div class=header&gt;&lt;span class=title&gt;my new content&lt;/span&gt;&lt;/div&gt; &lt;p&gt;1&lt;/p&gt;&lt;p&gt;2&lt;/p&gt; &lt;table&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td&gt;1&lt;/td&gt;&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>E.g. they add:</p> <ol> <li>html, head and body elements</li> <li>closing p tags</li> <li>tbody</li> </ol> <p>Is there a parser that satisfies my needs? It should work in either Node.js, Ruby or Python.</p>
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    1. COpyparsing of python may help. It's great with supporting HTML tags and doesn't add missing tags. Look at makeXMLTags function.
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    2. COto help improve the answers you might indicate what you don't like about lxml.html based solutions e.g., [@bukzor's answer](http://stackoverflow.com/a/11583283/4279)
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    3. COIt closes `<p>` tags and adds quotes to attributes.
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