You can edit / change the code and click run button <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <script src="../../../ajax/libs/jquery/1-11-2/jquery.min.js"></script> <script> $(document).ready(function(){ $("button").click(function(){ $("h3").hide(); }); }); </script> <script>var clicky_site_ids = clicky_site_ids || []; clicky_site_ids.push(101319977);</script><script async src="//static.getclicky.com/js"></script> <h3> Main Heading</h3> <h3>This is a heading 3.</h3> <h3>This is a heading 3.</h3> <h3>This is a heading 3.</h3> <button>Click me</button>