test 1

var Greeter = (function () { function Greeter(message) { this.greeting = message; } Greeter.prototype.greet = function () { return "Hello, " + this.greeting; }; return Greeter; }()); var greeter = new Greeter("world"); var button = document.createElement('button'); button.textContent = "Say Hello"; button.onclick = function () { alert(greeter.greet()); }; document.body.appendChild(button);