13-TypeScript单例模式

class User{
    public name:string;
    public age:number;
    private constructor(name:string,age:number){
        this.name=name;
        this.age=age;
    }
    private static user:User;
    public static GetInstance(name:string,age:number){
        if(this.user){
            return this.user;
        }
        else{
            var user=new User(name,age);
            return user;
        }
    }
    public GetUserInfo():string{
        return "UserName:"+this.name+" Age:"+this.age.toString();
    }
}

var user=User.GetInstance("caojian",37);
console.log(user.GetUserInfo());