Set type for function parameters?

Question

Is there a way to let a javascript function know that a certain parameter is of a certain type?

Being able to do something like this would be perfect:

Answer 1

No, instead you would need to do something like this depending on your needs:

function myFunction(myDate, myString) {
  if(arguments.length > 1 && typeof(Date.parse(myDate)) == "number" && typeof(myString) == "string") {
    //Code here
  }
}