gistfile1.rb

#without :ujs option
link_to_function("Greeting", "alert('Hello world!')")
# <a href="#" onclick="alert('Hello world!'); return false;">Greeting</a>

#with :ujs and :id option
link_to_function("Greeting", "alert('Hello world!')", :id => "greeting_link", :ujs => true)
# <a href="#" id="greeting_link">Greeting</a>
# <script type="text/javascript">
#   //assuming users JS framework of choice is jQuery
#   $(\"#greeting_link\").click( function(){ alert('Hello world!'); return false } );
# </script>

#with :ujs and :class option
link_to_function("Greeting", "alert('Hello world!')", :class => "greeting_link", :ujs => true)
link_to("Greeting", "#", :class => "greeting_link")
# <a href="#" class="greeting_link">Greeting</a>
# <a href="#" class="greeting_link">Greeting</a>
# <script type="text/javascript">
#   //assuming users JS framework of choice is jQuery
#   $(\".greeting_link\").click( function(){ alert('Hello world!'); return false } );
# </script>