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up vote 1 down vote favorite

I am using TypeScript with Angular2, following is my class declaration - 

export /**
 * Stress
 */
class Student {
    FirstName: string;
    LastName: string;

    constructor() {
    }

    get FullName() : string {
        return this.FirstName + this.LastName;
    }
}

When I try to initialize the above class using following code - 

var stud1: Student = { FirstName:"John", LastName:"Troy" }

I am getting the following error - 

Type '{ FirstName: string; LastName: string; }' is not assignable to type 'Student'.
Property 'FullName' is missing in type '{ FirstName: string; LastName: string; }'.

Any help please what I am doing wrong here, or it is not supported yet by TypeScript?

share|improve this question
    
When I try to initialize the above class I guess you mean "instantiate". – torazaburo Aug 20 at 15:38
up vote 2 down vote accepted

To construct an object from your Student class you need to use the class' constructor.

var stud1 = new Student();
stud1.FirstName = "John";
stud1.LastName = "Troy";

console.log(stud1.FullName);

Or even better, let the constructor initialize object's fields:

class Student {
    FirstName: string; //this is public, unless you specify private
    LastName: string;

    constructor(firstName: string, lastName: string){
        this.FirstName = firstName;
        this.LastName = lastName;
    }

    //your FullName getter comes here
}

var stud1 = new Student("John", "Troy");
console.log(stud1.FullName);
share|improve this answer
    
I could have done that just that I find object initializers more handy. More so when I don't want to put every "set" property in constructor, which in this case I have to. Thanks for the response. – Raj Aug 20 at 15:14
    
To work with object initializer, Student will need to be Interface, but then Student will not be able to contain methods including getters. They've discussed some options here. – Granga Aug 20 at 16:09
    
Thanks Granga, that helps. – Raj Aug 21 at 14:00

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