How to return false on autocomplete in google maps when pressing down key?

Question

JavaScript

Hello!
You have to customize Google Maps to suit your needs.
Perhaps this question only applies to Javascript, not to the Maps API.
When using autocomplete, when you press the "down" key, the value from the list is substituted into the input. How to get rid of it?

...
if(e.which == 40) {
return false;
}
...

that doesn't help.
Help me please!
PS I catch the event

$('#id').keydown(function () { ... });

or

google.maps.event.addDomListener(input, 'keydown', function(e) { ... });

Answer 1

So:

var input = document.getElementById('input');
autocomplete = new google.maps.places.Autocomplete(input);

google.maps.event.addDomListener(city_input,'keydown',function(e){
        if (e.keyCode == 40){
            google.maps.event.clearInstanceListeners(input);
        }
    });

just keep in mind that at this moment the autocomplete will be completely disabled,
you need to add a check for the state of the autocomplete (enabled / disabled) in the code, and
enable it again when necessary
new google.maps.places.Autocomplete(input);

Answer 2

e.PreventDefault();
There is ?