title: Get the column value <td> from a selected row <tr> by the class Attribute
body: <p>A short question: i use a usually html + twig table which i fill with a lot values. The important part of this table looks like that:</p>
  
  <pre><code>{% if rec.pDsDuplicate =='0'%}
                              &lt;td class="PFu1Exists"&gt;
  
                                  {{rec.getPFu1Exists()}}
                              &lt;/td&gt;
                              &lt;td class ="PFu2Exists"&gt;
                                  {{rec.getPFu2Exists()}}
                              &lt;/td&gt;
                              &lt;td class ="PFu3Exists"&gt;
                                  {{rec.getPFu3Exists()}}
                              &lt;/td&gt;
                              &lt;td class= "PFu5Exists"&gt;
                                  {{rec.getPFu5Exists()}}
                              &lt;/td&gt;
                              &lt;td class ="PSdqExists"&gt;
                                  {{rec.getPSdqExists()}}
                              &lt;/td&gt;
                              &lt;td class="PFupExists"&gt;
                                  {{rec.getPFupExists()}}
                              &lt;/td&gt;
                          {% else %}
  </code></pre>
  
  <p>Now i use this function to select a row:</p>
  
  <pre><code> $("#search_results tr").click(function() {
       $(this).addClass("selected").siblings().removeClass("selected"); 
   });
  </code></pre>
  
  <p>after the selection, the row belongs to the class "selected".</p>
  
  <p><strong>Now my specify question</strong>: How i can get the value from the  column with using the class/ID Attribut e.g <em>PFu1Exists</em> from the selected row.</p>
  
  <p>of course, i can iterate about the row and compare, but im looking for a quick an short JQuery line.</p>
  
  <p>during reading some posts here, i found the function closest and find, but how i have to write the statement that  i can be shure!, that the query is just searching in the selected row.. ? and not will traverse up and down to the next row?</p>
  
  <pre><code>value= $(.selected).closest(.selected).find('.PFu1Exists');
  </code></pre>
  
  <p>thanks for your time!</p>