coffeescript - CoffeeScript 中的理解对象 [dict/hash comprehensions]

Question

有没有办法从 CoffeeScript 的理解中返回一个对象？一些东西，以便我可以表达这一点:

form_values = () ->
  ret = {}
  ret[f.name] = f.value for f in $('input, textarea, select')
  return ret

像这样:

form_values = () -> f.name, f.value for f in $('input, textarea, select')

我想构造一个对象(不是对象数组)。所以如果标记看起来像这样:

<form name=blah>
  <input type=text name=blah1 value=111 />
  <textarea name=blah2>222</textarea>
  <select name=blah3>
    <option value=333a>
    <option value=333b>
  </select>
</form>

返回的对象将是这样的:

{
  blah1: '111',
  blah2: '222',
  blah3: ''
}

Answer 1

form_values = new ->
  @[f.name] = f.value for f in $ 'input, textarea, select'
  this

或者

form_values = new class then constructor: ->
  @[f.name] = f.value for f in $ 'input, textarea, select'