title: Save data in html tag attribute
body: <p>How save some data as html tag atribute? For example, given data <code>asd/45.33/blah</code>, I need save this data in html and after using jquery get this data so: </p>
  
  <pre><code> $("#my_tag").attr("special_attribute");
  </code></pre>
  
  <p>its possible?</p>