How to validate valid characters for latitude and longitude during typing?

Question

I have a text input for typing latitude and another for longitude.

I would like the field to allow typing only of characters valid for latitude and longitude.

I believe the field should accept only numbers, "." and "-", correct?

At first I think something with regex works, but I don’t know how the regex:

    // Campo para latitude e longitude;
    $(".latitude, .longitude").on('keypress', function (event) {
        var regex = new RegExp(??????);
        var key = String.fromCharCode(!event.charCode ? event.which : event.charCode);
        if (!regex.test(key)) {             
           event.preventDefault();             
           return false;
        }  
    }); 

Answer 1

Pretty basic but it worked...

    $("[id*='" + camposSharepoint.Ocorrencias.LatitudeEvento + "'],[id*='" + camposSharepoint.Ocorrencias.LongitudeEvento + "']").on('keypress', function (event) {
        var regex = new RegExp("[0-9\-\,]");
        var key = String.fromCharCode(!event.charCode ? event.which : event.charCode);
        if (!regex.test(key)) {             
           event.preventDefault();             
           return false;
        }  
    }); 

If someone can improve so that they don’t repeat the characters "-" and "," it would be perfect