Checking for missing parameter in function

Question

Is this the correct way to check for a missing parameter in a function? Would this work in all browsers? How about IE?

function getName(name){
    name = name !=         


        

Answer 1

The correct way to check is

if (typeof name === "undefined") {
    // ...
}

Of course callers can still "fool" you by calling getName(undefined), when a parameter has been provided but the check will flag it as not-provided nonetheless. But that's really a pathological scenario.