title: Change select box value text
body: <p>I got one text box and one select box.</p>
  
  <pre><code>&lt;input type="text" /&gt;
  
  &lt;select&gt;
  &lt;option value=1&gt;Test1&lt;/option&gt;
  &lt;option value=2&gt;Test2&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>Now i want when user type anything in text box, to change value=2 text.</p>
  
  <p>I tried this, but looks like don't work.</p>
  
  <pre><code>$(document).ready(function () {
  $("#textbox").keyup(function () {
  
  
  
  
      $("select#sync[value='2']").text($(this).val());
  });
  </code></pre>
  
  <p>});</p>