How to check all fields with the same class in jQuery when changing to empty ???

Question

JavaScript

There is an input field (class='.field'), and a disabled button. There is also a change event. Here, at this event, the input field is checked for emptiness, and if it is not empty, then the button will release the lock.
But if we add more inputs (class='.field'), then in that event it is not possible to check all the inputs and unblock the button.
How can I solve the problem???
Here is the code: codepen.io/anon/pen/LpZPXb

Answer 1

But in my case, there are not inputs, but select, and there at the beginning of the option, where value = '0', and now you need not to select this item, otherwise it will be empty. And in this case, how can this code be corrected?

$(document).on('change', '.field', function(){
   $('button').attr(
     'disabled', 
     [].some.call($(".field"), function(e){ return e.value==false })
   );
});