CoffeeScript, pass multiple parameters including an anonymous function

Question

I am not sure how to write this in CS. maybe some1 can help:

FB.getLoginStatus(function (response) {} , {scope : scope})

thanks.

@d4rklit3 if I were you I would back off coffeescript for a while and try to get a good grasp of javascript first. — Ricardo Tomasi
– Ricardo Tomasi, Commented Apr 12, 2012 at 19:27
possible duplicate of How to pass two anonymous functions as arguments in CoffeScript? — mu is too short
– mu is too short, Commented Apr 12, 2012 at 19:27
@RicardoTomasi i read your comment. and i disagree with you. perhaps you should be more tactful. just some friendly real world advice for you buddy. — d4rklit3
– d4rklit3, Commented Apr 12, 2012 at 21:20

scottheckel · Accepted Answer · 2012-04-12 18:56:38Z

10

You would write some CoffeeScript like so...

FB.getLoginStatus(
  (response) -> 
    doSomething()
  {scope: scope})

Which would convert to the JavaScript like so...

FB.getLoginStatus(function(response) {
  return doSomething();
}, {
  scope: scope
});

answered Apr 12, 2012 at 18:56

scottheckel

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2 Comments

I'm sorry my quick sample doesn't meet your requirements for perfect.

You're forgiven. FB.getLoginStatus receiveLogin, { scope }

datentyp · Accepted Answer · 2012-04-12 20:23:05Z

FB.getLoginStatus(function(response) {}, {
  scope: scope
});

in JavaScript is:

FB.getLoginStatus(
  (response) ->
  { scope }
)

in CoffeeScript.

To answer your question about multiple parameters further have a look at these examples:

$('.main li').hover(
  -> $(@).find('span').show()   
  -> $(@).find('span').hide()
)

In CoffeeScript equals to:

$('.main li').hover(function() {
  return $(this).find('span').show();
}, function() {
  return $(this).find('span').hide();
});

in JavaScript.

An even simpler example regarding handling multiple parameters (without anonymous functions) would be:

hello = (firstName, lastName) ->
  console.log "Hello #{firstName} #{lastName}"

hello "Coffee", "Script"

in CoffeeScript compiles to:

var hello;

hello = function(firstName, lastName) {
  return console.log("Hello " + firstName + " " + lastName);
};

hello("Coffee", "Script");

in JavaScript.

SethWhite · Accepted Answer · 2016-07-21 22:18:43Z

0

Another option:

FB.getLoginStatus(((response) ->),{scope})

answered Jul 21, 2016 at 22:18

SethWhite

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