jQuery filtering select options does not work in Safari (but works in Chrome and FF)

Question

I have a form with some dropdowns, and the first selected dropdown will serve to filter the second dropdown\'s choices (to limit them). The following code works just fine in FF

Answer 1

If you are going to use .filter, you should be return a boolean indicating whether or not to include the current item instead of using .show() and .hide() documentation

Otherwise, use .each or .map