[]请问我怎么在js中调用这个方法

var Zszen;

(function (Zszen) {

    var Test = (function () {

        function Test() {

            this.rand = Math.random();

        }

        Test.output = function (){

            console.log(this.rand);

        }

        return Test;

    }());

    Zszen.Test = Test;

})(Zszen || (Zszen = {}));