使用typescript开发js代码提升代码维护性

function test() { 
    var gs = new Greeter(‘ss‘);
    alert( gs.greet());

}
window.onload = test;

class Greeter {
    greeting: string;
    constructor(message: string) {
        this.greeting = message;
    }
    greet() {
        return "Hello, " + this.greeting;
    }
}

function test() {
    var gs = new Greeter(‘ss‘);
    alert(gs.greet());
}
window.onload = test;
var Greeter = (function () {
    //构造函数
    function Greeter(message) {
        this.greeting = message;
    }
    Greeter.prototype.greet = function () {
        return "Hello, " + this.greeting;
    };
    return Greeter;
}());
//# sourceMappingURL=file1.js.map