JavaScript Example

gistfile1.txt

<h1>Chicago</h1>
<h1>San Francisco</h1>
<h1>New York</h1>
<h1>Boston</h1>

<a href="http://www.google.com" id="button">Abracadabra!</a>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>

<script>
  $(document).ready(function() {
    
    $("#button").on("click", function() {
      $("h1").slideToggle();
      return false;
    });
    
    $("h1").on("click", function(e) {
      alert("You clicked " + e.target.innerHTML);
    });
    
  });
  
</script>