A demonstration of some of the power of closures when used for currying in JavaScript.

curryProduct.js

var f=function(x)
{
    var g=function(y)
    {
        x*=y;
        print(x);
        return g;
    };
    return g;
};

f(2)(3)(5)(7)(11)(13)(17)(19);

// 6
// 30
// 210
// 2310
// 30030
// 510510
// 9699690