Typescript including types and optional arguments

Question

Write a JavaScript program to list the properties of a JavaScript object Sample object :

var student = { 
name : "David Rayy", 
sclass : "VI", 
rollno : 12 };

The question is to add typing, optional and default arguments in this program using Typescript.

Answer 1

including types and optional arguments

Types and optional members . Just an example:

var student: {name: string, sclass: string, rollno: number, somethingElse?: number} = { 
name : "David Rayy", 
sclass : "VI", 
rollno : 12 };