newb Js question about function return global variable reasssignment

[Proglearner]

Have a look at this snippet:

var changeNumber = function(number)    {
    return number + 5;
};

var newNumber = 4;
changeNumber(newNumber);
alert(newNumber);

I've been taught that the function should reassign whatever value it returns to the global variable NewNumber, so that newNumber should change from 4 to 9. This doesn't, however, seem to happen when I test-run the code; newNumber retains its original value. So where'd I go wrong?

Prog

[stbuchok]

Please take a look at this: http://snook.ca/archives/javascript/javascript_pass

[gon1387]

Hi proglearner,
You forget to catch the value. :)

Your code should have been done like this:

var changeNumber = function(number){
    return number + 5;
};
var newNumber = 4;
// Should catch the returned value from changeNumber function
newNumber = changeNumber(newNumber);
alert(newNumber);

[Proglearner]

Geez, don't I feel like a total dumbfrigg now. :D Thank you!

[gon1387]

Please make this thread solved, if everything's ok now.

[Proglearner]

Marked. :)