title: HTML: <textarea>-Tag: How to correctly escape HTML and JavaScript content displayed in there?
body: <p>I have a HTML Tag <code>&lt;textarea&gt;$FOO&lt;/textarea&gt;</code> and the <code>$FOO</code> Variable will be filled with arbitrary HTML and JavaScript Content, to be displayed and edited within the textarea. What kind of "escaping" do I neet to apply to $FOO?</p>
  
  <p>I first tought of escaping it HTML but this didnt work (as I will then get shown not the original HTML Code of $FOO but rather the escaped content. This is of course not what I want: I want to be displayed the unescaped HTML/JS Content of the variable...</p>
  
  <p>Is it impossible to display HTML Content within a <code>&lt;textarea&gt;</code> tag and also allow it to be editable as full HTML?</p>
  
  <p>thanks
  jens</p>