Question

I have the following js code:

$("#mySelector").change(function(){
  console.log($(this).length);
});

I know this is wrong code to get the number of items in selector. But how should I get this number in correct way?

P.S.
In normal way I should use $("#mySelector option").length to get this number. But how to add option to $(this) operator?

Answer 1

$("#mySelector").on('change', function(){
  console.log($('select', this).length);
});

or for options ?

$("#mySelector").on('change', function(){
  console.log($('option', this).length);
});

FIDDLE