how can I use coffeescript with jquery?

I am using the 'Koala' program for CoffeeScript. I will write a coffescript with jQuery. I am writing the following code. Not working

$ ->

Output code

(Function () {
        $ (function () {});
    }). Call (this);

This does not work in SW. Do I make a mistake? Or how can I use coffeescript with jquery?

Solution

Here's an example…

<!DOCTYPE html>
  <body>
    <a class='button' href='#'>Click Me</a>
  </body>
</html>

$ ->
  $('.button').click (event) ->
    console.log 'button clicked'