Angular4: cannot read the property of undefined

Question

I am trying to learn angular4 with the tutorial they provided in website

Here is the code

hero.ts

export  class  Hero{

             


        

Answer 1

Check in the template if selectedHero is set before access any of its property

{{selectedHero.name}}

or create an empty instance in the component (updated answer)

selectedHero: Hero = new Hero(12, 'somename');