title: jQuery change on click and if i click again change back
body: <p>i have here an on/off button,</p>
  
  <pre><code>    $(document).ready(function(){
         $("#onOffButton").on("click", function(){
           $("#onOffButton").text("ON");
         });
      })
  </code></pre>
  
  <p>When i click back, i want to change the button to Off.</p>