Scoping

• Functions in JavaScript are lexically scoped.
• Like Java, like most languages.
• Thus, this works:

function hypotenuse(a,b){
        function squarea() {
                return a*a;
        }
        function squareb() {
                return b*b;
        }
        return Math.sqrt(squarea() + squareb());
}

hypotenuse(2,2);