Coffeescript (jQuery) in Rails app doesn't work?

Question

I am struggling with implementing a functionality with jQuery + Coffeescript - the problem is that the code doesn't show any alert windows.

Here's the JS functionality:

jQuery ->
  Stripe.setPublishableKey($('meta[name="stripe-key"]').attr('content'))
  subscription.setupForm()

subscription =
  setupForm: ->
    $('#new_subscription').submit ->
      $('input[type=submit]').attr('disabled', true)
      if $('#card_number').length
        subscription.processCard()
        false
      else
        true

  processCard: ->
    card =
      number: $('#card_number').val()
      cvc: $('#card_code').val()
      expMonth: $('#card_month').val()
      expYear: $('#card_year').val()
    Stripe.createToken(card, subscription.handleStripeResponse)

  handleStripeResponse: (status, response) ->
    if status == 200
      $('#subscription_stripe_card_token').val(response.id)
      $('#new_subscription')[0].submit()
    else
      $('#stripe_error').text(response.error.message)
      $('input[type=submit]').attr('disabled', false)

All class and id attributes are configured properly, but when I click the button, no alert window is called.

When I put an alert window before the jQuery -> line,

alert('asf')
jQuery ->
...

the alert window is displayed, but when I do

jQuery ->
alert('asf')
...

then is not displayed.

The file above is successfully loaded. I am using jQuery v1.11.1 , Rails v4 .

What am I overlooking here?

Thank oyu

Answer 1

Intendation is important in coffescript

jQuery ->
  alert('asf')

will produce

 jQuery(function() {
   return alert('asf');
 });

However

jQuery ->
alert('asf')

Will produce

jQuery(function() {});
alert('asf');

Perhaps screwed up some other intendations. Check the compiled js code with chrome dev tools of Firebug or the like