title: How to get html from element by id with jQuery
body: <p>I have simple list:</p>
  
  <pre><code>&lt;ul id="tabs_nav"&gt;
      &lt;li id="t_00"&gt;data&lt;/li&gt;
      &lt;li id="t_01"&gt;data&lt;/li&gt;
      &lt;li id="t_02"&gt;data&lt;/li&gt;
      &lt;li id="t_03"&gt;data&lt;/li&gt;
  &lt;/ul&gt;
  </code></pre>
  
  <p>Now: How do I get the html of the first element, depending on what is ID. I would add that all of ID's change dynamically with the click of the button. This is my code:</p>
  
  <pre><code>btn.on('click',function(){
      var ladder_nav_tabs = $('#tabs_nav'),
          first_ladder_element_inset_id = ladder_nav_tabs.find('li').first().attr('id'),
          first_ladder_element_inset_html = ladder_nav_tabs.find(first_ladder_element_inset_id).html();
      console.log(first_ladder_element_inset_html);
  });
  </code></pre>
  
  <p>Thx for help.</p>