title: How to hide multiple divs in a single line of code?
body: <pre><code>function switch01(){
    $("#contact").hide();
    $("#about").hide();
    $("#mail").hide();
  };
  </code></pre>
  
  <p>This works, but I want all the three lines write in a single one.<br>
  I tried with <code>+</code> and <code>,</code> - without result.<br>
  In fact I have five divs to hide.</p>